I got a lobby of randomers in MVM and managed to get them all to agree to have 3 Snipers in the game to the end. With some good coaching and coordination we triumphed! Give Snipers a chance guys a good sniper can replace a demo and be a lot more help to the team than you think.
My general opinion on this is best shown through this chart: A good Sniper, can be just as useful, if not more, as a demo or soldier. However, a mediocre sniper is far more useless than a mediocre demoman.