My current class A has a rebuilt title,my 2001 ford truck has a rebuilt title.
If you can inspect vehicle before repairs are made and actually see the damage than I personally see no problems,purchasing one that had already been repaired is a shot in the dark .
you have really no way of knowing what actual damages were and have proper repairs been made or simply covered up.
If the coach was involved in wreck than repairs is as simply as repair/replace damaged part/s. BUT,, take if from someone who's been there,, ifs its water damage check unit closely .
If the problem was a roof look than it can be worked with if it is a flood vehicle RUN as fast as you can.Problems can show up with "water dogs, local terminology" that will always require attention . as soon as one thing is fixed something else will break.
My local bank will only loan 1/2 of nada on a rebuilt title but insurance company has no problems covering mine.