My personal preference is for small and agile, not expensive and capable of all, just the task at hand.
If it means UAV's that's fine, we're leaving the realm of pilot capability with extreme speed and G forces, so let's have tiny tactical stingers, capable of supersonic speed and with the ability to mount an array of weapons, defensive or offensive.
There are spotty kids out there that may be the generation we need if a global war were to break out, not aircraft nd crew costing squillions of pounds that won't be able to get to their targets.