RTB's redundancy architecture is something I thought about in the beginning but figured it wasn't really something necessary to spend money on, especially since RTB has no income. All the add-ons are backed up daily and stored in a bunch of locations so we're not going to lose any files, it's just a problem of server downtime. The Blockland auth server doesn't even have any redundancy as far as I know, and that's far more critical than RTB so I can't see how a good case for RTB having it would ever be made.
Since RTB serves files through server-side script, I'd also need to have those on Kalphiter's server and he'd need read access to the RTB database. Both of those are ideas I probably won't consider given the code theft that's already been taking place.