Upper_Krust
Legend
1e's Deities and Demigods did have a section about divine ascension.
Well, sort of...of course lets not forget those brief seven paragraphs ended with...
"...Naturally ascension to divinity effectively removes the character from the general campaign..."
So it suggested a few vague pre-reqs for Ascension...that basically led to your character being retired.
And there are other D&D-style 3pp games out there that address this area as well.
Most seem to take the 'extra 10 levels' route. No doubt easier to balance that way, but can that stat Zeus (for example)?
I'd love to see a swing at it using 5e as a base. It would be a fascinating supplement for Level Up!
I am sure some crazy person will eventually get around to it.