Multi-role fighters ARE fighters! But...I'll continue to beat that horse until fighters, all 3 classes of fighters stop messing with ground targets if there are aerial targets available.
The p-47s, at least, have 8 "little pew pew" .50 cal mgs, which are quite capable of putting the hurt on anything flying. They have great rate of fire and low overheat, and are all the same caliber. The downside isn't so much lack of hitting power, but range. They only have 5-600m whereas 20mm+ (except German 30mm) can reach out 7-900m or more.
Variety. The German and Russian planes have cannons good at dealing lots of damage quickly to aircraft, but with short firing time. They also have a lighter or non existing ordnance load. The US planes have lighter guns, but larger ordnance loads.
Personally, I have a lot of fun with the XP-44 doing everything from picking off zeros in tge furrball to taking out bomber flights, to helping cap factories or command centers.
The P-47B? This plane I don't care for. It just doesn't seem to do things as well as the XP-44 for tier. Could be happy coincidence that the XP-44 just gets easier matches when I run it.
As for yaw, this is using the tail rudder to control the horizontal, left and right, direction of travel. This is probably the one area where joystick users have a strong advantage over mouse + kb users (assuming WG hasn't realized this and removed rudder control from joystick control scheme!).
For M+Kb, the ai is flying the plane. We're just kinda "suggesting" where we'd like the nose to go. The ai routine gets confused when you toss in key inputs while it's trying to do its thing.
I mention yaw being very useful in bombers because their control coding has them NOT roll much when turning. So, with M+Kb, you can do a relatively controlled yaw turn using yaw keybinds.
Fighter ai control coding uses much more roll when turning. So, using yaw in a fighter will get the nose to yaw a little and then the ai gets confused and starts trying to roll into a turn while also trying to center and level the aircraft. The results are interesting to watch, but not particularly useful or controllable. Changing level off rate or center rate in advanced settings may reduce this wonkiness, but fighter ai never liked yaw key input, so I haven't tried fiddling with it much in fighters for 2.0.
Joystick guys are actually driving the plane. So, they can use yaw (from keybind, buttons, twist joystick, or rudder pedals -no idea what WoWP supports in that regard) to actually move the nose left and right without any ai control routine trying to do strange things snd fighting their control input.
Theres plenty of times in fighters that I wish I could adjust my nose just a bit left or right to land a shot, but the ai flying the plane says, "Nay, nay!!".
There used to be a mouse control mode designed to simulate a joystick (that some people loved, but I found unplayable). I think that mode did allow yaw key inputs without the wonkiness since the ai was letting the player be in more control. But, I think WG removed that control scheme because....reasons.
Utilizing yaw and roll keybinds together in M+Kb control scheme can result in some evasive rolls, but I still find a hard turn and transitions between horizontal and vertical planes slightly better at beating incoming aim-assist boosted fire. YMMW, feel free to play around with mashing roll and yaw to see if you can find a useful key combo.
There's another thread where someone describes a "snap roll" and you can "kind of" do this manuever using yaw + roll keybinds along with mouse pitch input, but it is, in my experience, inconsistent and fairly useless vs an enemy who isn't right on your tail. If he's a ways back, he'll just drag is mouse down and keep hitting you as you lose altitude and roll. And, with aim-assist, his bullets just have to get "close enough" to do damage to you.
Oh, and I'm terrible at aerial rocketry, so in the unusual event I find myself in a match in an aircraft equipped with rockets, I will use them against ground targets, usually the hardened pieces of AA guns. But...this is pretty rare. Rockets take a bigger toll on speed than bombs. And if you don't have speed, you may as well just paint a big target on these fat unmanueverable xp piñatas. Since bombs are both more useful in capturing a point and have less impact on speed, I usually won't load rockets or both (unless I'm in a rare RP mood), on an occasion where I add any of that junk to the wings of a fighter.