That sounds like it would be a completely different game and probably not as fun since you'd have to use some very fiddly controls to manually get into orbit. If you eliminate orbit entirely then it's just a slalom race. "Hitting" each star/planet is the immediate feedback that makes it fun.
Yes, give me weird orbits! I want a shot which is just outside the target area to get sucked in by the gravity of the planet, but potentially letting me slingshot around an intermediate planet towards a more distant one. The tap command should still mean “gravity disengaged, momentum still active“ to allow shifts from one orbit to another.
