Imagine the largest Warhammer40k scale battles topped with balance for all races. Can you imagine your enemies being nuked by your own superweapon, or steamrolling them with many titans fighting other titans with complete balance? Then this is your mod.
Tyranids work perfectly! They can die, winconditions have been updated, and the Hive Fleet can actually die if under attack (even though it should be undetectable). So no problems with Tyranids, no problems with Necrons, or any other races, including Sisters of Battle, too!
It is functional, one last thing to do is to ship it off to public. :)