I used to say this too, but living in a multiparty country for 20+ years now (NL) I don’t see it as an advantage when you need to govern so large a country. It sounds like an easy solution until you try to get agricultural and city people to agree, and then now try multiplying it by 50.
Unfortunately, a two-party system will likely work best as you’ll need a common consensus to move the country in a single direction.