Elite slayer even with AA's can be lots of fun on smaller maps as Evade allows you do quite a few tactical jumps and having increased movement speed and jump heights brings more skill to the table. With these strafing is much more important and you can ghandi hop too :]

Elite Slayer on CountDown doesn't work to well but powerhouse,zealot and some other TeamSlayer variants work pretty well. Elite Slayer FFA is a blast though except on the cage as that map is just bad for FFA due to the awful spawns but surprisingly FFA Elite Slayer on countdown works as the map movement is there because of no specific teams.

I pretty much always veto for EliteSlayer on PowerHouse if the option is there. Pro Elite slayer is were it's at though.

have to agree countdown and the cage suck for anything but swat