One interesting change would be with EAD, they are essentially jammer smashed into the chaff catridge, they have a limited battery life, like 5 seconds or something, hence to effeciently fool a missile, you have to time these EAD dispensing correctly, if you do early the missile would just re lock you again, do too late it will proxy on you.
With this gaijin can make that you can carry only a limited amount of these, because they are expensive af irl, hence essentially punishing repeated bad usage of these EADs
Not only that but you would also have to go to side aspect to make them viable, not strictly notching.
Now for other jammers, if a missile gets jammed, it can go in HOJ, hence the targeted plane would have to maneouvre to get rid of the missile
For jammers there is noise jamming mode too, used by dedicated EW aircraft, but can also be used by other normal aircrafts too, which would deny the enemy fire control solution for any aircraft other than the jamming (emmiting) aircraft, this might be good while teaming up, but its addition to the game depends how powerfull gaijin makes it, like how many aircraft will get noise jammed by a single pod/main radar, the range, burn through range, coverage etc.
A limited amount of aircraft being effected would help create a healthier gameplay, a high number would just force even more cramped wvr meta
What i am not sure is that noise jamming effects x amounts of planes or any amounts of planes in x coverage