Answer me this: what Service, if not OperServ, would you propose to move the modlist to? It makes no sense to put it on NickServ, ChanServ, MemoServ, BotServ, or HostServ, leaving only OperServ. OperServ can be configured to be accessible to all (which, in my opinion, defeats the purpose of it being called OperServ) or configured to be accessible to opers only. So at the moment, the only way to deny access to the modlist is to make OperServ for opers only. I'm of the opinion that the list of modules shouldn't be accessible to everyone, because (going with what trystan said) it can prevent people from using exploits on 3rd-party modules.