no they couldnt.
- early jet engines were more delicate than prop engines
- 4x30 mm cannons fired much slower than lesser ammunition. even the 20 mms fired in intervals. you dont have much time window to aim and queue shots with wwii aircraft speed, leave aside a jet
apart from those me262 doesnt have any advantages over other type of fighter aicraft. for, despite it is faster, if it attempts to get ahead and make another pass it will still gain only 25%-50% more passes, but still will be subject to the same risk of defensive fire. not to mention that jet fuel ran out fast. leave aside the fact that 30 mm shells being low in number.
heavier armaments were already used in other aircraft. germans used 2 x 30 mm gun pods in most aircraft already, me109, fw190. similar armament to 262 was already being used in such formations. what effect they did, is out in the open.
as for your other points, its still moot. if a new threat appears, new solutions are found. it would either be radar operated defensive turrets, or jet bombers, or jet fighters (which were already coming up for 1945 and were better than 262), or 40 mm proximity fuse flak mounted in aircraft.
Well not being an airforce man my self (served in armoured troops).
Still the introduction of rockets that could fire further than defensive weapons coupled with speed that made tracking difficult sounds rather effective. I don't know if there was technology to operate turrets with radar and even if there was, sounds awfully dangerous to use proximity fuses in box formation (friendly fire).
Of course there was ongoing developments in technology, but generally I have been under impression that at the same level, fighter kick bombers tail.
Yep B17 war 30's design. So was Tiger, jet planes and lots of other things that materialised lot later. I would say that war technology belongs to the era, where it could be effectively implemented to carry out foreign policy.
And I commented this thread because I like the system to take into account that every game is somewhat ahistorical. And I so hated to get you general dies in a bombing raid, when he's in Berlin and nearest hostile bomber is in New York.
I also hate those games that start to give you volksturm troops automatically in 1945, even if you would be attacking Washington.
Japanese industry and technology would be totally different if they had managed to get resources and defend their industry and convoys.
So as I said, not an airforce man myself