I found piles of usable stuff in Tripwire. The Idea is solid which is why I picked it up anyway, to spark Ideas.
Same with Belt Strike (I do some Belt heavy adventures, especially in Demo's so it's handy), though Belt Strike also had the Belter Career stuff as well which my players jumped all over.
My thing is with a game product I look at it this way. Is it usable? Can I spark Ideas off of it? Will people have Fun with it. I think Tripwire, even with the plot holes, meets those requirements for me. Sure it's a bit of GM work, to flush it all out, but then, it ALL is GM work in the end.
~Rex