BS their art department is very good, and encounter/level design in most games reaches genius levels at times. can't comment on the engines, since this is the first game to use an in-house engine. so what's left... character development is usually good, they have good designers working on their leveling systems. what else... I guess one could say their games lack polish, but that's understandable at least, though not excusable of course.
what do you mean by "mediocre or worse"?
what crusade?
the only people who really enjoyed FO3 were those who had never played the originals.