Hey, that message will bug me forever so hears my thread. I've been looking to find a way to get back into customs because I love some of the new gametypes being created, so here I am.
Welcome, glad you could come here. I reckon customs are the best way to play gametypes like Extraction, since that's pretty rare on matchmaking (and even then you need to pay!) Or even some funky new ones you make yourself!