I find it strange how people don't try to take down the enemy titans. There's nothing worse then being against of team with all their titans walking around. That's how I really know when I lost a match.
Even though I hate using a shotgun, I still use the shotgun class just for the anti-titan weapon. I really like its 3 round burst compared to the powerful but slow assault anti-titan weapon.
People are learning. I'm already seeing a lot more pilots jumping out while you rodeo their Titan and trying to hunt you, and using their Titan's as guards while they cap points, rushing a group of enemy titans, taking damage, and ejecting so they take out the group with the nuclear blast, etc...
Give it a little while, its only been in the hands of a small amount of players for a tiny amount of time.