I think aside from Shen's ult he's kind of at a reasonable spot comparable to most tanks like malph/rammus/nautilus/etc..
I just want to see something that makes him a little bit more viable in the jungle as he has a better place in jungle right now rather than top.
Although he really only has 2 abilities(as E is just a CC lock for champions) that are available for him which both aren't that great. Cinderhulk made his jungle 10x better than it was before, but there's still something missing.
This has probably been asked, but having his E actually be able to taunt monsters(not minions) he'll be able to clear more because of the 1/2 damage reduction for 1.5 seconds will help him out a lot. Maybe(this might be too much to ask, and whether this will be possible or not) when he taunts a monster it reduces his cooldown by like x amount of seconds(1-3), so he wont have to suffer from if he were to taunt a monster and something would be happening around the map when he ults he should have it when he lands on his allies.