Celebrim
Legend
Falling Icicle: I'm all in agreement with your cons and most of your pros.
But not this one.
Because I can foresee a newer players without system mastery taking the power swap feats, and then finding that the multiclass power just isn't really giving thier role the advantage that one of thier own role powers would, resulting in them swapping the multiclass power back out for a class power when they gain a level.
Net effect - one (or more) wasted feat(s) that the player regrets taking because sticking to 'single class' was actually more effective.
It's definately going to take planning to make spending a feat just to swap a power for another power worthwhile. You're going to have to know what you want and what you later plan to swap for when the original power levels out of effectiveness.
But not this one.
It doesn't require pre-planning to be effective, unlike 3e multiclassing. Players will be more free to be spontaneous without the risk of ruining their characters.
Because I can foresee a newer players without system mastery taking the power swap feats, and then finding that the multiclass power just isn't really giving thier role the advantage that one of thier own role powers would, resulting in them swapping the multiclass power back out for a class power when they gain a level.
Net effect - one (or more) wasted feat(s) that the player regrets taking because sticking to 'single class' was actually more effective.
It's definately going to take planning to make spending a feat just to swap a power for another power worthwhile. You're going to have to know what you want and what you later plan to swap for when the original power levels out of effectiveness.