SD 10s on any pylon other than the default 2 and 6 won't work in MP (anti cheat in place by deka).
Create a simple SP mission, then test both SD10 and RA'AD and see if the issue still exists.
you are right, it's not feasible. But It's been pointed out many times that right now we have JF-17 Block 1 with some Block 2 features. So in future if get full block 2, then maybe be can have blk2 with some blk3 features
Not sure if this has been reported before but the new Throttle Textures (that includes throttle labels) are missing which cockpit is set to performance mode.