Fuck,I haven't though of doing that combo with D.Va's ultimate,gotta try it for the lulz
It takes a bit of practice not to overshoot, since you can't cancel the boost after you jump out. It's paticularly good when attacking on temple of Anubis. Defense matrix down the middle at capture point B, boost+ult once you pass the crates before the bridge. Your mech will blow up in the middle of the point, and you can jump into cover behind the crates while you call in a fresh mech. If you boost down the bridge immediately, you can usually get 2/3rds cap done before the enemy team respawns.
I need to try out Zarya/Winston at some point. Seems like noone wants to pick tank, and Reinhardt is boring 80% of the time when you're bunkered down.