Heat is a problem, a big problem in planetary flight. The Dolphin overheats extremely fast when using yaw while in normal space over a planet/moon anything not space.
It's been pointed out that's probably a bug, as no other ship does that. Hopefully will be fixed at some point. Plus, if we are talking combat, I've never had a dogfight on a planet or moon. If your talking skimmer missions, a) you'd switch out your weapons for dumbfire missiles, and b) why shooting the ground you generally use lateral thrust rather than yaw, to stay on target. Either way, generally isn't an issue in normal operations.