Jacob Small made this post in Twitter a while back (hope you don’t mind Jacob):
User: How many warnings is too many in a Revit model?
Me: Well that depends, but it is definitely less than the *five million, twenty six thousand, and fifty two* which you currently have.
Today I was checking the warning in my project and I came to 43 after I cleaned up a few that were easy to fix, which is not to bad. 33 of those I still need to fix, as those are in a corner of the building I still have to go trough and clean up the model all together, so those will be gone soon. The other 10 are from stairs and I come to accept the errors from stairs as those never really do what I want them to do anyway.