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Maybe this is off-topic, but I really like the thing in 5 where you can see in advance during battle whether your unit will deal damage to the enemy, and if so, how much. It's a great idea. You don't have to waste magic or a turn for nothing. As far as I know, this wasn't in the previous parts?
It was, you just had to configure the battle options accordingly (in 4 it seems it was automatic). =)
By the way, I don't really like ATB in 5, specifically because sometimes when casting a spell you can already see whether it's resisted or not, whether it worked or not — for example, you blast 80 archers with an empowered Explosion, and if they are still on the ATB, it means it didn't work; if they aren't, then there's no need to worry. Still, the devs did a good job; before there were even more lags with ATB and no element of surprise at all)