I wasn't a huge fan of battle tactics before but I at least prefer what they're doing in 4th than what they did in 3rd.
I'm happy that the faction specific tactics are gone and can't be used as freebies to 'balance' struggling battletomes, and pleased that they've resisted making buckets of universal ones so I can learn them easily. I think it's good that they're all going to be in the annual General's Handbook and they can shake them up there if needed, and I kinda like that you can't pick a battle tactic if you choose to take the double turn.