The rules seem to say that you draw reputation tiles for each hex combat. If you had combat in three hexes you would draw and keep 3 tiles in one turn. This seems like a lot of VP's for combat. Does it make sense to draw at the end of the combat phase rather than at the end of each hex combat? That would limit a player to one tile per turn.
Lets say I had three battles in 3 hexes. In the first one I destroy an interceptor, in the second one I destroy an interceptor and the third one I destroy a cruiser. I draw 2 tiles in the first battle (participation and one kill) and keep one tile, In the second I draw one tile for the kill and keep it. In the third one I draw 2 tiles for the kill and keep 1. That gives me 3 tiles in one turn.
Yeah, you can fill up your reputation area in one turn if you have enough combats in one turn. Since you can only keep 4 or so (depending on race), each turn you do that results in progressively smaller incremental VP gain while the loss of ships, actions, etc. will continue to be the same.
You'll rarely be in multiple fights in the same turn, and likely aren't winning all of them if you are. You could improve existing ones. Rep tiles are only one aspect of scoring and there is a cap and diminishing returns for gaining vp this way