Mainly, the strategic choices when it comes to positioning. I used to play a lot of might&magic:duel of champions, and one of the main things I loved about that game was positioning around different types of aoe.
Currently, spells and creatures that require specific (not talking about blanket aoe like makantor or holy immolation) strategic positioning around:
That 5 mana vetruvian spell
Might have missed some, but my point is that these are all spells/minions that can be played around by very careful positioning. And I absolutely love it! And there’s only like six cards in the entire game that does this kind of thing.
So, my personal wishlist for things I would love to see in duelyst:
Spell/Opening gambit minion that affects a + or X shaped area.
Minions/spells that affect a blast like area (vertical horizontal across the board). Might even make it two tiles wide.
More area denial outside of shadow creep (which has become largely irrelevant in that regard since shimzar). Effects that last for X number of turns and either damage/cripple enemy minions or buff friendly minions. Maybe the ability to block a tile (no minion/general can step or be placed on it) for a turn or two.
I’m also going to go out on anlimb and suggest a change to the frenzy mechanic. Not because I think it’s overpowered (all frenzy minions would obviously need to be buffed to compensate) but because I think it could be much more interesting. So:
Frenzy minions only hit the 5 tiles in front of it.
It’s still a fairly respectable aoe, but it would make it possible to actually position around (looking at you makantor) and put more emphasis on strategic positioning.
Anyway, those are just my thoughts, I was slightly dissapointed shimzar didn’t introduce any more position focused cards but hopefully as the game evolves we’ll see more of those.