It's tough to say.
for example, On Def Leppards last album X, there were 2 songs on there they didn't write at all.And It's not that they were bad songs it just ruined the ilusion for me, I've been a fan for so long that it just looked to me as if they couldn't write anything good enough no their own.Wich is not the case.But I still found to apreciate "Long long way to go" as the amazing ballad that it is but maybe resent it a bit.(does that make sense?? )
So I wouldn't know, maybe if it is a monster of a song I could dig it, but I probably would resent it the same way since i know they are able to write perfectly great songs on their own.with outside help a lot of the times but still.