The server I play on has world borders and resets Twilight Forest (and other dimensions) every other week. I think it's a pretty good setup, even though I'm a little sad I can't live in a Twilight Oak on there like I often do in singleplayerThey don't. Or they have 12 gigs of ram for 12 people. Twilight is extremely intense. You could also add a world border to it and prevent players from creating their own portals. That way all the chunks within the border could be loaded and the lag/leaking would become non-issue. Though this would likely eventually lead to needing to reset the world as well.