WOW. Sounds like a LOT to go through, and I can see doing that if it was a vocal that I wasn't present for the tracking or didn't do it at our studio.
on every record produced from front to back, I've moved a vocal line maybe, 3 times, out of quite a few releases.
What you hear on my records is exactly how the vocalist laid it down, timing and feel wise.
I'm also a Nazi and can get uber up in the singer face and really push them to be the best they can, that's cool.
I like to point out the fact that, as a vocalist, it's fucking AWESOME to say "yeah man, all the vocals on this record weren't TOUCHED. just eq, compression, etc..."
I find it makes vocalists really enjoy the process more. Then again, I've been kind of blessed in this regard because I've always worked with remarkable vocalists.... IDK why, hahaha...
But I say, do what you gotta do! For how *I* like things, no, I'd rather record the part again until it's just how the singer and I want it (I also tracks in 'blocks' so that we can really focus on wtf is going on, hahaha). definitely not into, hit record, start song and try to scream WELL all the way through it.
Unless it was called for, a band like glassjaw or something in the hardcore realm per haps....