Haveing penalties to attack and haveing player made bounties is going to hurt people who have positive rep, you get good rep lose attack then some guy puts bounty on you and you get wacked hard and the defense bonus is pretty much useless since almost no one uses defence so if you are going to lower attack at least give hp bonus to good rep.
Not really I was in neb for 10 days not long ago and I never buddy or alt neb I just got hit everyday for a while from galaxy attacks if you are going to take my growth because of that you have to at least restrict the radius of galaxy attacks or I can never get back on my feet.
I don't mind the 5 or so times limit but a single chance would kinda be bad for anyone in the top 20 because lower guys hit you and kill your pships/swarmers or whatever you are defending with and then you lose several thousand k segs and you have to reserve dam near all your ships just to try and get them back and they will warp on you.