And the people who are good at winning elections are different from the candidates who are good at governing. So you're screwed either way.

At least with parties, the members of the party get to choose the boundaries of their concerns. E.g. the working families party in NY is a powerful presence in the state democratic party, and that is in a FPTP system.

If you vote for parties based on platforms, and then parties coordinate with one another to build coalitions, then you might just end up optimizing for governance.

Not perfect, but less flawed.