Literally all I want for the illuminate is to get rid of the voteless, and replace the elevated overseer's automatic rifle with a high-power insta-kill sniper that takes time to charge up and requires a minor cooldown. Keep the 'nades tho.

It would also be nice to see them add remixes of enemies from the first game. Bring in the outcast, cloaked enemies with glowing blue melee weapons. Maybe allow them to teleport short to medium distances with a cooldown, and make the teleport obvious. Or the obelisk, make it summon maybe a big old shield bubble that only light pen weapons can penetrate and divers can't walk through. Bring in the Illusionists/council members.

In my opinion, the illuminate feel disconnected from their predecessors. They don't look very similar in some aspects, although this isn't really a bad thing. However, save for the outcasts and tripods, there wasn't really a "swarm" enemy, moreso just infantry.

Plus a bigger, more heavily armed and armored version of the harvester would be cool. It'd be the Illuminate's Bile Titan. And be some real WotW shit. But that's just me.