Look here : http://www.twcenter.net/forums/showt...imod-for-SSHIP
kaiser29 has reworked descr_faction_standing.txt file, as I looked at it - a lot of global standing minuses are tuned - nerfed by 50% or more.
I think this single file should work if you don't want to apply whole 'Quieter AI' mini mod. So it could do the job you are looking for.