AbdulAlhazred
Legend
http://www.enworld.org/forum/showth...st-of-good-powers-to-poach-from-other-classes
http://www.enworld.org/forum/showthread.php?468787-Three-Step-Role-Handbook(by-MwaO)
Those two links ought to show some of the issues. There are a lot of choices that are already worth a feat in and of themselves(Dark Blue/Sky Blue)...the Dark Blue is questionable if it costs a feat, but if it were free?
Right.
Personally I think PMC (in general, there may actually be maybe one or two options here that do work, but I doubt it) is a raw deal. You lose all the action point mechanics of a PP and in return you get to basically swap out an at-will for one of the 2nd class. Most characters use their 2nd at-will as something like a fallback (say maybe a usable ranged attack for a character that otherwise only has an RBA, or an alternative for when you feel you MUST hit against a different defense and don't really care so much about the effect). Its unlikely you'll find that trade to be worthwhile, as the AP effects of many PPs are pretty strong! Beyond that many of them have pretty decent powers too, and instead you'll have to pick powers of a lower level from your 2nd class, not BAD, and possibly as good as or even slightly better than what a PP would offer, but not distinctly so.
So, I've always thought that PMCs probably should have some slightly better sweetener. Its hard to decide what exactly that would be though. Better access to 2nd class's features might work, but that's not going to be universally true, some will be much better than others (effectively the same issue that exists with hybrids, some hybrid classes are so good that in terms of pure optimization you probably should almost always hybrid something like swordmage or wizard).