The code for base calculation is fake news.

The reason why the incubation takes 3 days is to give the imms plenty of time to set the base. It might be a vote or it might be any imm can set. It's no different to empowerment or anything else. The imms decide if they want you to play that character in their game.

It's funny how I was told the reason for my 3% few months back was due to taking quest too soon. Now someone else tests that hypothesis and confirms it was bogus. Fake news.