In my opinion & experience of course, ranked from high to low:
By Strength
By General('s Strength)
By Popularity
Strength
I put Songhai ahead of lyonar since Ziran hasnât found her groove yet
Popularity
No idea
Power
Songhai-Tier: Songhai
Diamond: Magmar, Abyssian, Vanar
Gold: Lyonar
Power ranking:
1-Abyssian, Vanar, Magmar
2-Songhai
3-Lyonar
.
.
.
.
4-Vetruvian
Popularity since the new patch
1-Magmar
2-Vanar, Abyssian, Songhai
3-Lyonar
.
.
.
4-Vetruvian
Popularity:
1- Songhai
2- Abyssian
3- Vanar
4- Magmar
5- Lyonar
6- Vetruvian
Power Ranking:
1- Abyssian / Vanar
2- Songhai
3- Magmar
4- Lyonar
5- Vetruvian
It seems Vetruvian is the least popular and weakest faction! 
Why is that?
Other factions got to keep their Makantor War666, Holy Immolation, Spectral Revenant, OP removal, 0-cost spells, et cetera, ad libitum, ad infinitum, ad nauseam, and Vetruvian didnât.
But, you know, Vetruvians are fine, because they still have their faction version of Blood Taura, which many players like to cite as the Vetruvian âpower cardâ that keeps them âgood.â
Vertruvian does need more strong cards.
Are we playing the same game?
Among the 4 weakest BBS in the game 2 of them are in the same faction-> Vetruvian. BBS are very very important in Duelyst in fact if you have bad faction cards you can always play with neutrals as long as your BBS is good you are fine (this is what Vanar does mostly) but if your BBS is bad nothing can replace that and you are always going to have a disadvantage compared to the other factions.
Starfire sacarbs , Aymara healer, siphon energy, starâs fury, second wish , first wish ? How could Vetruvian be the strongest faction before the nerf if the faction cards were so bad? As I said above it is not a problem of cards but of BBS.
Give Vetruvian an OP BBS they will be OP give them a balanced BBS they will be balanced, it is as simple as that.
I am doing it by generals, factions are misleading.
5.Sajj/Ziran
6.Starhorn
So basic points to gather
1.The game is fairly balanced only Kara is head and shoulders above everything.Cass is very good but the meta is shifted towards beating so it looks worse than it at times.
2.About five generals are really close to each other,You can make good arguments for each one but I think Reva and Vaath are next two best but if anyone said one of the other generals is better I can see a argument for it.
3.Starhorn is awful, Sajj is awful, Ziran is okay looks like she will be with the addition of Skorn. Honestly Ziran just needs to be able to heal herself for one.Sajj and Starhorn need new abilities.I think this is perfect ability for Starhorn
Seeking eyeâThis turn your general can replace twice
I just wrote what I see on ladder doesnât mean that itâs 100% accurate data 
Itâs not about Vetruvians not having good cards. They got some good cards; it was just that other factions got to keep their OP cards and Vetruvian didnât.
Vetruvians need some OPness back basically so they can play on an even field with the other factions. OP BBS obviously will do (itâs the most consistent OPness since you are guaranteed to âdrawâ them just as you enter mid game), or a few OP cards, just something OP as every other faction has, and by OP cards we donât mean glorified faction version of Blood Taura.
Power and Popularity
This is what the meta feels like to me in my personal opinion. I couldnât decide whether Kara or Vaath deserved number one, I guess you could consider them tied. Looking at this list, I play mainly Sajj and Kaleos, Iâm one of the few that think Sajjâs BBS is not terrible, just slightly underpowered. I despise playing the meta op stuff like Makantor War666 and Taygete Vaath, Kineticats and 4/7 Shieldmasters Kara or Holy Frustrating and Divine Cheese Argeon. I consider myself an âhonourable playerâ and consequently play outside the meta, so far Iâve been doing okay with a Sajj deck.
P.S. Makantor War666 and Kineticats are terms under the name of Sorostaran and I claim no credit for them. Sorry Soro, had to use em to manifest my frustration. I came up with the others myself.
I have trouble getting what you guys mean by faction version of Blood Taura for Vet?
The only powerhouse (debatable) card in Vet atm I can see is Aymara. What is this card you guys are talking about that I wouldnât know about?
I think that is what it means, its a pretty powerful card after all.
If they havent got an answer for it, it opens up some crazy comebacks.
Is blood Taura that good?? It didnât strike me as such a good card compared to Blistering Skorn
I am glad you guys donât get to balance the game.2nd wish unfair card,Amara Healer unfair card, Dominate Will unfair card.Hex blade and Scrab good cards.
Vet doesnât need OP cards they need solid cards that synergize with Vet game plan.Vet has some of the most OP spells in the game,Vet has some of best late game minions in game.Vet has the worse early game of any faction.
With that said Wind slicer will be huge boost it is 2/3 so no more primus fist/Heal mystic or sub par 2/1 .Vet gets a strong early play that push vet structure agenda that alone might be enough be make vet usable.
I never said Aymara was unfair, I said it was a powerhouse, every faction needs one, while I donât agree with everybody on which cards are break the limit of powerhouse to be on the âopâ criter, I think we can definitely agree on the fact that Aymara is one of Vetâs powerhouses if not the bestâŚ
Thats why IM SO HYPED!
Even if you have no use for the opening gambit, it looks cool, and has the stats of a stable in faction 2-drop, equivalent to Windblade, Cloaker, Kaido, Young Silithar, 2/3 with a keyword
It also helps out a Zirix dervish-centric deck because the cost reduc can allow you to drop multiple Obelysks in one turn that you wouldnât be able to now.
Blood Taura and Aymara Healer are good cards.
None of those are nearly consistently powerful enough to be OP. They are all situationally mediocre to very weak way too often. Their use case averages are solid, but they are not on the level of other factionsâ OP cards. Vetruvian does not have some of the best late-game minions in the game, Magmar and Abyssian do.
Every time you can break mana rules without substantial sacrifices in resources, there is some potential for OPness, but we will have to see how good the new structures are and whether they can be used en masse with existing structures. The new 2/3 wonât have enough consistency to be OP with just complements of six structrures.
Vetruvians are certainly usable now; it takes a lot more than just a major imbalance to make a faction unusable. MECHAZ0R and post-BBS Owlbeast Sage shenanigans are always there as fallback buffers for major faction/General imbalances in Duelyst.