@JohnBaker :
Well, why is there a history-free mode available? Sometimes you just want to get something down quick and you don't want or need all of the parametric overhead. I see 'Remove Parameters" as similar to mixing history based and history-free modeling in a single model.
I use remove parameters sometimes if I get a very poorly constructed model from a colleague and I don't want to spend the time to dig through it to figure out how it was built. Sometimes I'll get a model that has generation after generation of crap built up in it that nobody has ever gone back and cleaned up. If the only thing we need that model for is to document the current state of a one-of-a-kind tool, or some similar situation, I will just isolate all of the current geometry, remove parameters to make sure everything stays that way, and then delete everything else in the model. If we need parameters in the future we can add them thoughtfully using the synchronous modeling tools.
It isn't a feature I use everyday but it certainly has its moments.
NX 7.5.4.4, NX 8.0(Evaluating)
Tecnomatix Quality 8.0.1.3