well taking the npc density on beta into consideration its pretty much pvp + pve at once. a lot battles might be decided by the side that attracts less npcs.
so i dont think its the best idea that essential modules attract npcs at this large range . it might affect big fleets less, but will be a total pain for small fights.
and one more point:
if the npcs are that agressive and kill you "on sight" (that means when they can detect you) then there should be no need for aktive modules. then active modules do not affect your masking. if you want to change that then this might be another story. but im not so sure if its a great idea to lower the masking when your bots have active modules or even increse that effect per actrive module...
the reaction to active modules make no sense to me.