BR limit was one of the best changes regarding RvR in my opinion, For deep water ports it worked well. Small clans got access to pbs (5-10 players because of some port BRs) But what kills this idea is screening. You can have a pb that fits to the clan size but on the way to the port the clan has to pass 4 nations that screen and have 5times the numbers. So why bother attacking because you will never reach the port. As long we had the exploits to reach the pbs we had more pbs after that got fixed it decreased. So is it because of the port BR limits or because the system to enter the pbs is shit?
Ofc "screening " is a major part it let clans win the pb before the battle is actually fought thats why everybody loves it ... but actually it hurts rvr more than it benefits. Why bother why do hositlity when you will never reach the port on the battle date? Majority of players here fight to win even they say they dont.