Encouraging us to feel free Lego together all the toys we've bought in new ways whenever we like seems worth the departure from both canon and common sense, so I'm all for free refits.
I am not a fan of being able to change the engine rating more easily than arbitrary weapon changes, since the latter can be impossible due to new MWO-specific restrictions, though. If I can change the engine rating, engine type, structure type, armor type and distribution, it makes the chassis defined just by its hardpoints (including MWO-specific "cockpit modules" or whatever they will be called) and not... uh, the whole platform that they are built into. To me, it looks kinda like being able to rebuild an automobile from a pickup truck to a muscle car, as long as the total weight stays the same and the stereo system and number of seats fits in the same limits for the "chassis."
Edited by Owl Cutter, 15 May 2012 - 02:29 AM.