Coalition government offers a greater voice to minority voices, which is often a good thing. FPTP and two party systems are a race to the middle, which often leaves out people, but sometimes succeeds in diminishing extremists.

I’m not really aware of a system that effectively includes minority voices while deminishing extremists, although a robust constitution helps.

Unpopular opinion: Ranked choice is not much better than FPTP. It’s basically indistinguishable except in the case that a third party gains enough support to displace another.