In Jet sims, everyone running around at 100ft RALT & Face Shooting everything is a long recognized problem. It may be a multiplayer environment, but ~nobody~ save a miniscule percentile work as a team. I was shocked the other day when a few got it in there heads to send a SEAD dude in, followed by Ground attack with a couple providing CAP... ALL at the same time/place. But then you have to get them past the dog-sees-squirrel tendencies 98% suffer from. On the other end, there's this. We had massive majority on our side late one night--- So there I was, working FAC and I had 6 or 8 ground targets "smoked" (marked) on a target airfield we were hoping to capture. 4 F4's and an F-5 (who had just been struggling at hitting these same targets, WHICH is why I was there) took off from a nearby airfield, flew RIGHT OVER me, at the target, smoke and all, to chase a ~single~ MIG deep into enemy territory, kill it, run out of gas, come home and land. Just sayin, that's fairly typical.
SAMs suck, they just do. You have to learn countermeasures, all kinds of them, they usually work, probably. Heaters are the worst, because there is no warning (unless your flying Red (in my sim) then you get a ridiculously accurate and effective MWS system on certain airframes).
One server I know of has time periods in which Forward Aspect missiles are restricted. That's nice... but Ho's are gonna Ho one way or another. It's genetic.
Can't say much about Radar... I can just barely use them (properly).