CertainlyT should rework Nautilus.
He is a tank with a skill-shot that can be used as a dash, gap closer, and cc. His passive applies on-hit effects and roots you. His W is a tank buff and provides him with a less than useless damage boost that he can never optimally build into (I'm talking both sides of this ability, not just the damage, it's just not something you can build both ways which sucks so you always lose out on something). His provides, poke, wave clear, and cc all at the same time. His ultimate can be used to disrupt multiple foes by targeting the backline, thus providing cc as a knock-up, team fight disruption, and a means of artificial chase since the depth charge will seek and destroy its target.
Nautilus' kit while not broken, is certainly (hee hee) overloaded in its own way, and I think this is why Nautilus has such a tough time being balanced, and is why he lost his ability to jungle because he was either broken in other lanes or completely useless, so the only way to make him not useless was to forcibly castrate him and turn him into little Ms.Bitch-Supportilus.
I want Nautilus to be playable again, but if someone else reworks him, he'll probably just get turned into a boring old fucking one dimensional pure tank who can't do anything outside of scratching his own ass and providing some cc. CertainlyT, even though he is controversial as all hell, and makes annoying design choices seems like the right candidate to rework this unconventional tank-fighter.
Please do it, CertainlyT. The most recent change Riot made to him made to want to dance on the freeway during rush hour.