Akimbo, less control especially for hipfire, less mobility especially while aiming, 2.5x the reload speed... the thing is gonna be annoyingly OP nerfed or not, but itll be less over powering if there's a longer reload speed, which will give ut a glaring con in using.
BR zone timer should be swapped... fast in the beginning, slow in the end.
Spawn tank at start of the BR match, no need to nerf the thing when there's more players around to kill it.
Add 5 players for sqaud matches on BR, (singles, duo's, 5 man squad) that way we can transition between multiplayer teams and BR teams without losing a player or disbanding to join the different game mode lobby.
Make flamable weapons weak damage after explosion, and gradually increase in damage from prolonged exposure... that way players can run through flames without taking too much damage.
Add better dynamic lighting in night mode, or at least light from muzzle flashes for better immersion.
Add more bosses in BR, I'm sure the butcher is feeling lonely.
Consider spawning zombies for players outside the zone, instead of damage over time.
Sniper only BR mode should be like a regular BR match.
BR warzone should have a number of lives like the Alcatraz game mode, perhaps add an extra respawn for every 5, 10, 15 etc. kills.
Add a limited time BR gamemode where you spawn in with lvl 3 armor, and a custom gun load out you'd usually need an airdrop in order to collect... plus a backpack, with a standard 3 smokes, 2 flash bangs, 1 concussion, and 2 grenades.
Allow for hacking class in BR to hide your red shoulder glow.
Try for limited time make BR into a nightmode if it's not too difficult.
Lastly make seasonal objectives all available from the first week... people like me don't game daily, or can't, and it sucks needing to grind everything on the last week of the season, because the objectives weren't yet made available during the start of the season.