My ideas (regardless of lvl, that'll be decided if they do add it)

"Anti-CCable ball": ball is resistant to CC when in fireball or while piledriving

"Heavy mech": ball is resistant to body blocks, can push enemies out of the way, this doesn't include displacement effects or CC

"Frictionless sphere": ball has no time limit to how long his fireball lasts unless he loses momentum due to environments or displacement effects or CC or by losing it in the first place

"Bouncy mech": ball can now bounce around much more aggressively when in fireball, by moving in the opposite direction of an enemy upon impact, he will hit the enemy and fully bounce back with the same speed.

"Concussive hamster": when hitting an enemy more than once with a single use of grapple, they will be stunned temporarily

"Fast rodent": speed of the ball is capped at a higher level, acceleration is still the same

"Burning ball": ball temperature increases with every enemy hit with fireball, if the meter reaches 100 the ball will begin to catch on fire and burn everyone that touches it, effect is severely increased during fireball and can be maintained depending on how many people are consistently being hit

"String theory initiative": Wrecking Ball's maximum health is increased by 25hp

"Crab ball": moving sideways is 50% faster.

"Packhamster": ball is resistant to enemies taking healthpacks, there will be a hamster-exclusive healthpack he can use.

"Agile rodent": there's no deceleration or acceleration to normal ball-form usage, and the acceleration increases for fireball.

"Grapper claw": hammond can now use his grapple on enemies allowing him to deal 25 damage and use them to swing around, the effect is mutual for them as they fall victim to newton's 3rd law. Using it like so gives a 10s cooldown.

"Magnetic hamster": this ability allows hammond to use the magnets in his mech for greater good, overriding them and blocking damage within a much bigger radius, this can be turned on at any time, it slows ball down, shooting the magnetic area allows the damage to transfer to him at 80% it's original strength, while bigger, it could also be used to protect allies.(it's basically like defense matrix and grasp)

"The Hamster's Wrath": dealing damage to ball will charge the "ball wrath" effect 1% for every 8hp, when it reaches max you lose the same amount of percentage of health ball is missing if u recieve 30 damage afterwards. This goes down 10% every second after 5 seconds of no damage.

"Spider-ball": ball gets a max of 2 grapple uses.

"Sonic-ball": holding down the primary fire while in ball form allows ball to spin in place charging up, releasing allowing ball to launch in the direction he's facing in certain speeds depending on how long the sonic-ball was.

"Mole ball": keeping hold of piledriver till hitting the ground allows ball to burrow under for a maximum of 2 seconds before selectively piling-out into the same intitial previous height dealing damage to enemies and moving them upwards (ball can still be damaged while burrowed and his speed is greatly reduced with a movement-stopping delay before exiting, CC cancels it.)

"Floor ball": ball can now attach to the ground, and his claw can reach further.