I wish riot would change Nautilus's 'Titan's wrath'(W) mechanism and roll back his stat
By using 'W' just activates the shield and his AOE damage should be his basic attack.
The reason is that W is his only dmg mechanism, and once his shield goes off he is nothing more than a sand bag
(if you want to talk about his Q,E,R I would like to mention they are just CC skills unless you go full AP on Nautilus)
Also, his stats are somewhat like lux's. While Riot mentioned that Nautilus's role is fighter and tank, he is armor, mr, and health are low as ap champs.
I wouldn't think Nautilus would become OP if Riot roll back his stat into S2 and able to move through the wall by using his Q when he was released,
because there are too many op champs like Reksai and Lee sin (who was OP jungler from the day he was released and still is OP)