It is already very easy to get a trifecta with the junker because of the gun positions and how the ship moves. This would be more of a buff for say the goldfish, Pyri, Squid, and spire.
Maybe that is something that would cause a balance issue though. I really don't know, we would have to wait and see I think. Maybe the reasoning behind them going to neutral is something as simple as the gun naturally locks there so when you leave it you have to put it to neutral or else it flops around.
Also I probably should have put this in suggestions....