I don’t think they tried to do too much! I think Larian’s ambition is one of the factors contributing to making BG3 so great!
I enjoyed Disco Elysium, but it is a game with a fixed protagonist and only 1 companion, which is fine for a game from a small indie company, but is not what I would want BG3 to be. There aren’t many companies making AAA party-based rpgs, so I was really happy to get BG3!