Primary purpose is to spread unique status types while also being a generally effective weapon.

Overframe is not showing the additional damage from Cascadia Empowered at the time of writing.

[Galvanized Shot] does nothing for your AoE, but does affect the projectile. Aim for a target instead of relying on the cloud for damage. Treat it as a pistol with splash damage. If you don't mind losing the status chance, slot [Primed Fulmination] for additional range*, Primed Expel for faction damage, or [Magnum Force] for general use instead.

This will quickly apply and stack 5 different status effects and has fantastic synergy with a [Condition Overload] melee weapon too.

Use [Jolt] instead of [Convulsion] if you really want to ensure a stats per projectile, but with 4 shots per volley (with a fully ramped [Galvanized Diffusion]) 75.6% still be effective while giving you greater overall damage output.

Riven will be updated with a better roll in the future.

*Not much really, and it's even less since the egregious nerf in Update 32.