well to me speed is really essential... and i don't want to have to have a powerhouse of a system just to run it.
to you perhaps 40fps is oki, and to be honest it would be ... if the controls ran independant of the FPS - you could even get away with 15fps with the controls being independant.
and you have to remember that this is the speed of only 2 ships and 1 planet ... what happens when you have 2 planets? are you going to be in LOD - perhaps an effects LOD would be a good idea as well, so from far away you only have a single colour transparency and from close up you have it ghosted, if something is out of the camera's FOV then that too will not be ghosted.
there are so many ways you can edit the game ... that said my first post mentioned what i though of the controls bring awkard.
Not to be funny though but playability for the widest audience should be your PRIMARY consern, not good graphics.
and i don't think that it is too much to ask that this is playable on a machine that isn't over 1Ghz fast.
Within the Epic battle of the fates the Shadow and the Angel will meet. With it will harbinger the very fight of good vs evil!