A Blaster, but instead of exploding after a short distance, it's affected by gravity and bounces a couple of times before exploding in typical Blaster fashion. A grenade launcher, I guess.
An Inkbow. a charger weapon without a laser sight. A projectile, so not a hitscan like normal chargers. The Inkbow arrow could be a colored rod with a small burst bomb on it, and does uh, idk. 80 or so damage with a direct hit, and 30 with an indirect (burst bomb splash). Would also be affected by gravity.
A Splatling that can hold it's charge like a charger while in ink. That's...that's all I thought of so far, can't really think of any features to distinguish it from other splatlings. Oopes.
Also, cos I like brushes, I would want more brush types. A dynamo brush, that you can swing about twice every second that creates large waves of ink like Dynamo Roller
used to be able to do. An Ink Pen, an extremely thin layer of ink, and ridiculously fast swinging. But now that it feels like they buffed the inkbrush's swing speed, it seems redundant. Well trust me, it was a REALLY cool idea 2 years ago, alright? ;-; Just hasn't aged well.