Bit-Tech: It's clear that Bioware has been drifting away from a rigid faithfulness to RPG convention for a while now. The series has been getting steadily more like a straight-up third person shooter, phasing out the relevance of statistics and class-choices in favour of quicktime events and cover mechanics.
So, the first thing to say about Mass Effect 3 is that it continues this slant and takes the boldest steps away from RPG-land yet. There is multiplayer. There are mecha vehicles that you can only use in certain places. There are turret sequences.
The second thing to say about Mass Effect 3 though is that these changes don't ruin the game, though they do wound it.