1, I personally love the lancaster because of the bomb load and defenses. 50 cal aint bad. But i am a big fan of the ju88. Mainly for disabling small targets like vh's and radar. But lanc best for hangers. ju88 has great town capabilities because it carries a bunch of small bombs.
2, People use them all the time, especially for vh
3, well first you might want to have the map in your head so you know where all the runways are. As for the descending quickly...well you want to get down to a good altitude very fast. Cut the engine and dive down at 75 degree angle untill you hear creaking. Pull up..slow speed...and repeat. Sty at a good alitude until you are a good distance from the enemy base. Then what i do is drop to 3k feet. Once i approach i put 2 flaps down. 1k till base, gears down. That way the drones are able to get lined up in time. I cant tell you how many noobs put gear down right at runway...they might make it but by by drones. about 10 feet away from runway put 1 more flap down. Touchdown at about 120 knots.
4, Alitude. For me its all about altitude. If there are a serious amount of cons there...attack from the other side if possible. All the cons are worrying about the enemy fighters on 1 side. Sneak to the other. A good alt for that is 25k Most fighters will be out of contact range. But if they see you they arent going to get to you in time. unless stalling. i reccomend do not going around for another pass unless you are experianced. Alot of noobs tend to turn to hard and lose there drones.
5, I depend on guns. A lone luftwaffe fighter may bring some damage but not a kill. 4 mg's vs over 20....who do you think will win. Depend on your drones. When a con is on your six jump to another plane if you are gunner, that way you can get closer to the con and line him up easier. For down...they will try to the on your 6 easier...if they come straight up...gonna stall. Just get in ball turret and wait until close enough...give 4 second blasts. You are likey to take out engine or pilot. For above..if they are 2 or 3k above and they dive..they are going to not be able to pull up in time and might even ram you. Same if they are going down slow going onto your 6. remembe wait till within 800 feet before realesing guns.
6, Once you see target go ahead and slow to a target speed using the dot command. Then go ahead and calibrate...callibrate for 20-30 seconds for best results. Every time you make a major turn or speed up or altitude gain, re-calibrate. When bombing use ailerons to steer you to targer. NO RUDDERS. You are wrong that the X has to be on target. If you do it right on target likely to fall ahead of target therefore missing. Aim ahead of target. Depending on bombload.
7, Town: 15k depending on cons. If alot 20k base: 25k