Pyromantic
First Post
Saves (pre-4E) are really only superficially active, and fundamentally very different immediate reactions/interrupts. I would be disappointed to see immediate actions go away, and saves be treated like they're some kind of replacement.
A Save is mechanically equivalent to the spell attack rolls in 4E. I suppose some might feel more "involved" if they're rolling the die, but it takes only a minimal understanding of the game to understand how illusory that involvement really is. You're rolling the die instead of the DM. That's all. A shame that they're abandoning a completely sensible simplification (spells are attacks, just like everything else) that does nothing but make the game easier to learn, but without removing any actual depth, for the sake of such a superficial "involvement". And why should spells be the only things opposed by "active" defenses, anyway?
Overall, I've not seen much problem with immediates in 4E. The one-per-round limit keeps them in check, and their presence adds a lot to the game.
QFT.
A degree of out-of-turn actions has all kinds of benefits IMO. It gives a greater sense that combat is really interactive, rather than simply "can you do x damage before I can do y damage". It can increase player involvement, and IME that can actually speed up play, since people are more engaged in what's going on.
I'm also worried that this idea limits interesting out-of-turn actions only to times when you're responding to magic, moving us one step closer to having magic as interesting in the game and martial practice as boring and rote.
I have a positive opinion of just about everything I've read about Next, but this is a notable exception.