While I understand that there is a need for a method to practically distinguish between long range fighters and short range interceptors in the scaled down main arenas (and i think the concept behind is absolutely correct), but the current system leaves a lot to desire.
The argument that a 1x burn rate makes (powerful) short range interceptors go a much longer distance to a target and then loiter there for ages is quite correct and in some respect "unrealistic".
However, a 2x burn isn't that great either. It robs the endurance option of the short range fighters, but long range fighters are not affected at all. More so, the long range fighters still have the option to give up on endurance for performance, something the interceptors cannot afford. This is contrary to the often cited realism approach, because while the short range interceptor stays what it is (realistic), the long range fighter has a choice (unrealistic). As said before, I'm quite sure all LA pilots go up with 100% fuel (realistic) while most pony drivers may only take 75%, 50%+DT,50%, 25%+DT (unrealistic) to boost performance.
IMO, the best way solve this problem is to keep 2x burn rate and to eliminate fuel load choice, making 100% mandatory. That way you have the clear distinction between short range interceptors and long range fighters, without favoring one over another via loadout "games".