It seems that ECM has been reworked and new system sounds little silly.
I have late idea how ECM could be more interesting. Make ECM work like weapons with falloff range and tracking. Successful jam requires hit with enough “damage” = ECM strength. Falloff range reduces ECM strength like it reduces weapon damage when range increases. There could also be different size ECM modules for different size ships.
This would cause some instability for ECM.
Comments are welcome for my idea.
ps. You should not try reinventing wheel when it is already there.
pps. This same idea could be used for warp disruptors too.