I read th walkthrough's and I want to save everyone and have loyalty from everybody.

I haven't done all the loyalty missions and I'm gonna clear those up before I find the iff and legion.

if I do legion's loyalty mission after that, does that mean I'll lose some of the crew at the end?

http://card.mygamercard.net/lastgame/rjcc.png

www.engadgethd.com - the other stuff i'm looking at