I pretty much agree with people who say that ILWI (evilctf24) isn't suited for this mappool. It's designed to be quite slow paced (compared to most levels) in 3vs3. Basically, it's quite easy for the flagholder to stay alive, unless the other team is extremely good, and that's rare. Or to put it another way (a bit simplified), it's much easier to defend than it is to attack. That's all an intended part of the level, but it means that if you want to play to 5, it's going to take a long time.

That means the level is not a good fit compared to everything else mentioned in this thread. It's one of those levels where the more players there are, the better it works.

edit: oh and I should add, if you want to play 3vs3 there, go ahead. I think it does work... it's just that the gameplay isn't really to everyone's tastes.