I actually had several of my own ideas.
Jab/Forward Tilt: Inkbrush/Octobrush
Neutral Air: Squid Spin (Like a Kraken, kinda)
Forward Smash: Roller
Down Smash: Ink Mine (Think Snake)
Neutral Special: Splattershot (Hold to move while shooting)
Side Special: Bomb (Normally, it will be splat bomb, but burst bomb if done like a smash)
Down Throw: Ink Roll (put them on the ground and go over them with a roller)
Some of the moves I left because I either couldn't think of anything better, or I liked it.
I do support Inklings. 100%