[Erax]

While I do agree that fighters should not be allowed to travel up and down and across a system at will, I feel that this has more to do with range than speed. There is no reason to suppose that a TIE fighter travels any slower on a long-term basis than it does in the short term, but you can't sit inside one for one month straight (nor inside an X-wing, for that matter).

My suggestion, if we want to implement this, is to make fighter engines 'burn' more supplies per move (or - and I prefer this option - store less of them), so they can only move a few sectors (4-6 is my guess) before running out of supplies. This would allow you to transfer fighters between planets, but they would become a much less effective defensive force.

You could give the fighter life support component some supply storage, so that Rebel craft can have a little more range than TIEs (you could also design a TIE craft with a life support component to give it more range - give it some shields and you have Vader's fighter).