Easy solution for OP, change your sphere of operation. Just nip across to the "dark side" of the Med.
No slots, no restrictions, straight line all those pesky bends in the airways ? yep , straight to the end of my airspace.
Wanna fly 10,000 above the FPL level ? up you go boy, no-one else there anyhow.
Delays ? nope, " same day= no delay " , it's all de-stress not distress.
