I get that, but I guess so far when I've seen people say that they need a redrawer in that way it seemed like they were talking about quality.
This is of course a personal preference, but I honestly hate it when especially sound effects get redrawn. I find myself preferring the ones that do minimal alterations usually...
Of course if there's a lot of transparency, text that's not in boxes or balloons over complex backgrounds, etc. I can see that having to just put a white box on top of that isn't great either...