Who is in favour of a Guts added to Ozy’s third skill? It might be the influence of Ra’s Phoenix Mode speaking, but I think it would definitely fit since pharaons are usually associated with afterlife (pyramid, sarcophagus, mummy…).
I think Ozy is only one step (rank up) away from being the best SOLO rider in the game: the fact that now he can spam his Imperial Privilege (thanks to the cooldown reduction on his NP) already makes him hard to kill, plus he can delay the enemies NP and “negate” their NP charges. If he could tank the occasional NP with something like Guts (again spammable with his cooldown reduction) he could be almost invincible.
Granted he is already a powerhouse with the current Buster meta: him having only atk buffs in his kit is a benefit now (they also give him a crit buff now), since they scale perfectly with the Buster & Crit buffs from meta supports.