Stop massed attacks

how about implementing a control methoed which stops people/alliances from sending overwhelming attack fleets agains somebody

I know atm you have the score related system that stops you attacking somebody who is way smaller than yourself, but how about something that limits the TOTAL attack force

Something like planet X is target with a networth of 20 mil score, so maximum fleet score that can attack is say 40 Mil fleetscore. That would stop the massive attacks of groups against a single player.
At the minit you could get 20 ppl attacking all of whom are double the score of the target planet which means he is totally crushed