I voted for No…
Because it can cause a huge diffrences in Aircombats for some players to exploid that feature further more.
There are tons of vehicles which already manuevrable enough to cause havoc even with %100 fuel and I can not imagine them how will react with 5/10 min Fuel capacities.
It may also cause unfair BR Increases on Air Combats.
I think the Minimum Fuel Should Stay in %30 .
Only thing we need is External fuel tanks for Jets at the moment In my opinion, which most of them are still missing.
Best Regards