I just couldn't help but notice the irony of this statement. Preference aside (as it's a perfectly valid complaint / preference at its core), but siting the 'realism' of how fast magic casts is perhaps the worst reason to use against the new system.
On a deeper level, the 3 actions per turn COULD allow a very interesting play / counter play system, though that is VERY clearly not there, and not much consideration has gone into balancing it out (yet, or yet I hope), as they tripled player output to their advantage in 1v1 and made 1v4 imp fights VERY hard (as it's hard to handle 12 Actions between your turn). I recall rushing through Karl and Wolfgang as your first fight was pretty hard / risky. But now it's laughably easy, 3 hits often drops one. I even managed to get through it on max difficulty once (though it required some effort / attempts).
The new AP system also allows for price points in actions, to make some actions different and combo more or worse with other powers. In its current form, as crits for most effects are set through spamming, you're of course too encouraged to spam attack, with occasional spell, and never use twin strike (Granted, it was always bad in 99% of sitations in the turn system too). And never change offesive tactic (it's greatest failing, which it kept, there's little reason to switch to seduction efforts away from attacks, or to attacks if you've been seduction, you should only ever attack, or only ever seduce, with magic filling blanks / used for combos).
The AP system could be allowed to address this, having different actions of an enemy (or player) introduce vulnerabilies to counter moves, or traits like "Seductions after attacks are Critical", which would change from Attack>Attack>Attack as ideal, to at least a consideration of Attack>Seduce>Attack. Though Crit wouldn't be enough to split damage like that (and lose the attack critical, so it'd have to be something HUGE like instead of a Crit, a x4 effect, or force an enemy to miss, etc). But it's simpler and clearer to do it in this AP frame work, than a Turn system.
Plus its simply different, and fuck if RPG's need new innovations.
TL;DR random game dev ranting.