I think the easier solution to make both parties satisfied is to just change Jisei to Ame. As far as I'm concerned, Amegakure is the equivalent to Jiseigakure in the manga, in that it holds a neutral stance in the ninja world, is autonomous, gets along with the majority villages, and tends to not get themselves involved in the political conflicts of the outside world. It's not that huge of a loss, really. The village itself won't get changed, it can keep all the good buffs for all I care. The only real significant change is the retitling of said village.
Yes, I know Jisei has a place to some veterans' hearts as the neutral capital of SL, but is it really that bad to change the village? Like Genesis said, it's the deadest thing ever and buffs, and a few goofy one-liners aside, people barely visit that village for no reason ever. Besides, nostalgia is not a good thing anyway. It's actually healthy to objectively look at the game's flaws without rose-tinted glasses. Changing Jisei to Ame is surely to bring in more activity than Jisei could ever manage. Yes, I know Jisei is the Land of OOC, but if people really want to relax from all this RP gimmick, they can easily just change the comments section from RolePlay (Active) to OOC with a single click, or head to either the Gardens, Mission HQ or Clan Waiting Room.