Yeah but not as powerful and less expensive ink-wise.

Or perhaps a melee move where you jam a tank in an opponent's mouth then jump back and detonate it like in Jaws and ink covers a large area.

Dishmop would be a problem if it has a large radius of effect. If you are traveling through an area with mixed paint, it would be very hard not to wash away your own teams' paint.

I've already thought sticky bombs would be a great idea but I'd like it more if the only way to get rid of them was by having your team mates ink you down. So if you are alone, you are stuffed but amongst your team mates, you live or die together. It is a team based shooter after all. Alternatively, they could just run and leave you behind.

FLUDD.

Hmmm. New weapons that shoot ink? *insert lenny face*

I actually think integrating a Samus (maybe with Samus amiibo) character that can turn into morph ball and drop ink bombs would be cool.

Inkthrower and dishmop sound awesome! Get on it, Nintendo!

The Sponge:

Sub Weapon. A grenade/mine which slowly takes away all ink in it's targeted area until it's fully soaked. If an Inkling get's caught in it's area of effect it looses all it's ink, too.

The Supersponge:

Special weapon. Similar to the normal sponge, but with a greater area of effect, faster ink soaking - and this one exlodes in the thrower's ink color once it's fully soaked.

A barbed wire Dildo

Interesting ideas, I was thinking something like a melee weapon, but that wouldn't really work

yeah also good idea but I dont think it would work with random teams and no voice chat i guess. Would probl. be OP in the normal game but underpowerd when people do play via skype and co

Not a weapon per say but as a sub weapon they could have some kind of beacon that you throw down that allows quick jumping towards it with out the need of a team mate being near by.