I understand that part but I don't think Fedimint's current implementation has redundancy on a lightning guardian that fails. Say you're on vacation in Costa Rica and you're minting/zapping away and the guardian the zaps arr going through fails during a transaction... and since you're on vacation you won't be able to fix the failure for a couple of weeks.

What happens to the lightning transactions that were ongoing when the Fedimint's guardian LN gateway failed/went offline? If you're already running multiple guardians then one of those should take over as the failed LN gateway with a fully synched database and things should just move along as if no failure happened... no risk of forced closures or loss of funds.