Trying to improve Star Trek V wouldn't cause the original theatrical version to cease to exist. Time travel is impossible.
The sight of a middle aged Uhura, stark naked, doing a fan dance for some grubby alien bandits, is I'm afraid burned into memory. Much like interrupting your parents having sex when you were a kid. No amount of therapy will help.
I wholeheartedly endorse re-editing the film and putting the special back into SFX though. Particularly as a way of taking your mind off what I've just said... [shudders]