see normally i would write out a 8 page long diagram of how i'd do it but heres a different minimalist way
basically realms look like they suck (t. has never run a realm) and the perk mechanics are weird, realms should be more of something of a culmination of several villages around them (in the same style a village claim is, essentially, a culmination of smaller claims)
so imho you should take some of the mechanics meant for realms and distribute them to villages (villages having a small amount of perks they can activate is cool), and then have realms be a culmination of several villages as opposed to what it is now, no individual person is a 'member' of a realm but rather whole villages are (and, thus, all their members are part of the realm too) with a single village being the 'capital' village or 'chief' village or whatever
you could split this into further cool larpy stuff by having village themes that determine their bonuses/perks based off what they decided to have as benefits, and realms are a culmination of these village 'types' that would let them buy more perks (as opposed to the current system where you spread the realm over natural resources)
mayhaps another minor change where authority is less of a function of LP income but is more of a function of many things (LP income can stay, but reduce it significantly so alting isnt an easy way to keep auth up forever) multiplied by a Charisma based coefficient. i.e hunting animals, clearing dungeons, harvesting local resources, doing quests blah blah would all give your village/realm a burst of authority multiplied by the individual character's cha coefficient