Indiana Supreme Court rules against John Rust in Republican primary-related matter

Now, before you go ape shit on Republicans are all....

Instead, I'm curious about the matter of running vs voting.

Do you believe you should only be able to run for a party you voted for?

Does this protect the party? Or limit candidates (assuming it's a candidate you don't disagree with)?

Are there down sides to this?

What is if a moderate ran for Republican, but he voted Democrat a few times, or vise versa?

Would it be good if a middle of the road person ran instead of a more partisan candidate?

Lastly, I'm not advocating for this guy. Only discussion about the situation.