I propose the following:

•Give the Graviton Vortex a chance to inflict any status, much like the Sealed Sword
•As compensation, give the Obsidian Crusher a psuedo-Freeze status that "snares" enemies with Harvester tendrils but deals no damage
•Give all other Obsidian weapons this status as well
•Give the Spur line a psuedo-fire "Razorwheel" status that sticks a Spur bullet to them, dealing damage over time without flinch/knockback effects
•Give Shard Bombs a status that sticks small bits of the mineral to an enemy, which then explode. If the enemy thus stuck dies before the explosion, another Shard entity will stick itself in the ground and explode, sticking any other potential enemies.