[moe]

That should be a fairly trivial fix in both of them.

Simply abort the scanning after a configurable threshold (either seconds or files).

Needless to say that, yes, this must be implemented.

I've choked my vim more than once by accidentally running Command-T or FuzzyFinder in the "wrong" directory. That should not happen.

[notJim]

Command-T definitely has the feature you're talking about (CommandTMaxFiles I think.) I'm not sure about CtrlP.