I'm largely content with Oberon as is. My main complaints are not having 360 degree range default for Hallowed Ground, necessitating a double cast to cover an objective; and Renewal's zone being invisible and unable to be regained if you've lost it via falling in a pit/getting nullified. I'm content with the new passive upgrade to include sentinels, and Smite Infusion already makes Smite valuable. His 4 is hella clunky, if I was gonna change something significantly, it would be that. But I just subsume Dispensary over it so nbd.