Suggestion for Renekton Ultimate Buff

We all know that right now, bruisers like feel a bit underwhelming. While there are buffs coming on their way, I've come to the conclusion that he still needs some slight buffs. And my suggestion would be to give him the treatment. With that I mean that he should also receive a bit of resistances. Simply because I feel like his ultimate feels extremely bad in comparison to Nasus's ult, which gives health, resistances, aura damage and even some q cdr. While Renek's ult only gives some Aura dmg, health and some fury. That's basically it; let me know what you think of that idea