so you want there to be no equally easy way to stop you from coming in at 35,000 and destroying GAMEPLAY for an entire side of players????
don't tell me that bombing is not easy, it is sick easy. so what you flew for 2 hours AFK behind the lines to get alt, that's YOUR choice to waste that time.
is there anything easier that hitting a runway to take off, do nothing but spam ch 200 or whatever for 2 hours, then spend 5 minutes looking at a precision sight, and hitting a button.
yes in theory the defenders can take up fighters, climb up and attack you... but by the time you are noticed in your mission there is no way they'd be able to get up there that fast. even the best climbers in the game can not get to 30,000 in under say 12 minutes, and that is being generous.
now say you were in B17's you were going full power (which I know you are) according to HTC performance charts you are going 300MPH. at that speed you are going 5 miles every minute.
at that rate EVEN if the fighters could climb to 30 K in 10 minutes they'd have to see your raid, know it's target, and up when you are over 2 sectors away from HQ. think how far away that is, and realize there are many times you can't even be seen until within a sector.
if you are dead set on ruining the game play for an entire country be prepared for them to up and stop you at all costs. I for one find playing without radar so unenjoyable I log off and go to another arena. you can't tell where your squad is, you spend 10 minutes chasing a dot to find it is friendly, it is an utter waste to even attempt fighting.