Bitz aren't a bad thing...but I'm always short on certain things, and those things aren't shoulderpads. If I could melt all my shoulderpads into plastic and mold them into more feet and torsos, I'd be all about it.
That's what I always have the least of. I have dozens and dozens of extra choppas, some extra sluggas, a whole compartment of extra heads, and a wide variety of other strange things.