Suggestions to improve Vel'Koz late game

Organic Destruction (Passive) - INNATE: Vel'Koz's abilities Deconstruct enemies every time they are hit, stacking up to 3 times. Vel'Koz's basic attacks refresh Deconstruction stacks' duration on-hit.; INNATE: Vel'Koz's and teammates' abilities and basic attacks Deconstruct enemies every time they are hit, stacking up to 3 times. Deconstruction refreshes after third stack damage or 'n' seconds (whichever comes first); <Numbers tuning on third stack damage.>

**Plasma Fission (Q) **- Cooldown: 7; Cooldown: 5

Void Rift (W) - Static Cooldown: 1.5, Recharge Time: 19 / 18 / 17 / 16 / 15, Passive: Vel'Koz stores a charge of Void Rift periodically, up to a maximum of 2 stored at once.; Static Cooldown: 1.5 - 0.75, Recharge Time: 13 / 12 / 11 / 10 / 9, Passive: Vel'Koz stores a charge of Void Rift periodically, up to a maximum of 4 stored at once. <Increased flat damage and AP % damage.>

Tectonic Disruption (E) - Range: 850, Cooldown: 16 / 15 / 14 / 13 / 12, Suspends enemies hit for 0.75 seconds; Increased range and diameter via scaling, Cooldown: 14 / 13 / 12 / 11 / 10, Suspends enemies hit for 0.75 - 1.5 second(s). <Increased AP % damage.>

Lifeform Disintegration Ray (R) - Slows enemies by 20% for 1 second.; Slows enemies by 20% / 30% / 40% for 1 / 1.25 / 1.5 second(s).