I’m all for the card rotation; as many have said before me and far better than I ever could, it’s necessary.
As for the cards rotated out, all I need is a ‘Wild’ ladder, with exactly the same prizes as the standard ladder (Hearthstone has shown this works already) where every single card is available to play there.
I personally don’t care whether it splits up the community; a decent amount seem to want to play both ladders, so I doubt it’ll be so catastrophic as to split the community totally down the middle.
I also don’t care whether it’s balanced too heavily; that’s the price you pay for such a ‘Wild’ format; people would get used to it for just the chance to play their old cards again. Such balancing would be of course revolve around the standard format.
I suppose the thought there is, which will take out more players; splitting the ladders or totally rotating out hard-earned cards (I am aware CPG has plans to use the rotated cards, just saying my bit).