Listening to The Daily this morning on my way into work, and I had a scenario pop into my head concerning this case. While I don't think the following outcome is likely, it would sure be interesting!
SCOTUS rules that Trump violated the 14th Amendment by engaging in insurrection/rebellion, however the court is sympathetic to Trump's lawyer's argument that a state (or states) can't remove a person from the ballot based on the reading of that amendment.
14.3 states that a person can't become any of the named positions (and arguably President as well), but it doesn't say they can't be a candidate. So if states want to exclude Trump from the ballot based on January 6th, they can't. However, if Trump wins a particular state, the state could refuse to certify their win. A 2/3rds vote by Congress after the election, but before the electoral votes are certified would permit the state to move forward and give those EVs to Trump.