monkeypoacher

could split it up into various stages i.e.

skirmishing phase w/ bows and cav

then actual siege ****

idk, make it a round system or like battlefield or some ****

divide every warclaim up into flanks of no more than 30 players total fighting at the same time. put these flanks outside of render distance of each other and stagger the fights. delicious lag-free warclaims at the small cost of not having huge blob fights

edit: or yeah that sounds fun

Splitting it into stages just means the same 30 or whatever people on each side get to fight every time and everyone else never does. 

Staggered flanks better imo.