I've been spending too much time playing TF2 recently, despite having loads of work and lots of other really quite significant games I could be playing instead.
An interesting encounter on PC Gamer's server last night: Team LOL, including Richard, decided that they would all play one class per round, resulting in offences composed exclusively of Scouts, Pyros, etc.
It ended predictably: all-Scouts were whittled away on 2Fort by entirely standard tactics, all-Engineers held that factory level for quite a while but fell to massed Spies in their midst, and all-Spies perished almost immediately in an unending whirl of flame. Worryingly, however, all-Heavies and all-Demomen proved almost unstoppable. Could it be that TF2 is susceptible to monoculture?