Well, It depends if the people your working with truly want to make a good collab or just want to sit around and do nothing until the last minute and then that one animation could ruin the collab. You have to know that these people will actually work. Collabs are worth it, in my opinion, because the ones I've watched have been funny and very well animated. Not to say that there will never be a few problems along the way, but all in all they usually turn out well. But things can always end badly like you said.
Especially if a troll is involved.
nanocon
well i think that they are good if the right people do it i have seen some really amazing ones and some that are crap on steroids but thats always the risk you take so yeah since you asked you should consider it and if the trolls be haten WHO THE HELL CARES WHAT THEY SAY there probubly componsating for small penesis be piking on ya besides if your having fun doing a collab thats all that truly matters right