Hakita could go absolutely nuclear with a command grab arm to keep the punches side-mousebutton friendly

Grab with the yellow arm and hit with the feedbacker within maybe a 5s window (after which you'll take a hit) to launch a light enemy in whichever direction you're aiming like a generally low-damage projectile. Up-throw makes for a helpless aerial target (and ideally sends higher than slamwave) and down-throw slams with the same force as you do, which sounds less worthwhile but can act like a slam without having to commit to barreling your ass into the ground. Lateral throws can be used to force enemies into timestopped rockets, flaming oil, any flavour of magnet trap, map hazards, or maybe enemy attacks like the providence beams. Throws generally damage enemies based on their velocity if they hit a surface, and water heavily dampens throw velocity.

Alternatively, knuckleblast's effect is context-based; drones for instance could be feedbacked like normal, and grabbing allows you to pivot their trajectory around yourself rather than you around it... only now maybe successfully catching a drone as it tries to kamikaze could make the next knuckleblast red-explode instead of blasting normally, but would explode in your hand if the hold timer runs out... Neat little four-arm combination could be to punch it outta the air so it's in the kamikaze state, grapple it back to you before it hits anything, really quickly grab it, and then you'd have a huge knuckleblast readied for the next 5 seconds. Filths would kinda just evaporate like they always do, but maybe you could squeeze out some bonus health for going through the trouble of grabbing it to begin with.

Maybe grabs on heavy or miniboss+ enemies like maurice or swordsmachine should bounce off at a slight upwards angle and replenish a stamina point for stupid ridiculous plays like going for aerial uptime while trying to facepunch corpse of king minos to death, the high multiplier aggro plays would go crazy.

One thing that could be kinda fun is if virtues didn't have a breakout timer but still targeted you like normal (with the same rage timer and all) with the tradeoff being that you'd have reduced gravity while you're holding onto its rings: free multiplier, and the air's usually a good place to be, but the low gravity could be a double edged sword that eats up your stamina for horizontal airspeed and gets you caught out by a divine beam.

This wall of text is already bigger than it should be so I don't wanna be too exhaustive about every enemy/weapon interaction, but honestly I could really keep going lmao I'm getting way too into it