Kweassa I don't think a single moment this idea will be implemented.
This idea is about 4 year old now.
I strongly think you should start a separate thread to lobby about this. It is a good idea, and a
BALANCING idea.
Obviously if "realism", or "realism molded into gameplay settings" is the issue, then as much as short-legged planes suffer from their realistic shortcomings, the long-legged planes should abide by the logic of fuel management.
No plane in real life would fly with a half-empty tank, and use the DTs only on the climb out. The DTs are an aid to a plane's range when it cannot commute the distance with inboard fuel alone.
Having a 50% tank to assist in a fight, and casually dumping off DTs which was not required in the first place, is purely gamey approach.
So, if a long-legged plane wants to fly around with a 50% tank for short range fights - ok, fine. No problem.
But if they want to really fly around some more and still fight, then choose max fuel load. If max fuel load isn't enough(which is a rare thing to happen), then ok, use DTs.