Ok, so Toy supports evasion and OHKOs I take it.
Good to know =]
While I'm posting unpopular opinions, I'll come out in support of evasion and OHKOs as well, provided (and this is a big if, here) all tournament-type battles are done in a best-two-out-of-three style. OHKOs are annoying, but the chance that you'll win two battles out of three with them is slim. People don't want Double Team because they don't want to have a low-power, never-miss move on their team. Evasion is a valid strategy, and one that is easily foiled with the right moves. People just don't want to lose the move slot.
For battles that aren't for a tournament or some such thing, if you get beaten due to a OHKO move, oh well. You probably won another battle because a OHKO move failed to activate. It'll average out over time.