use a download similar folder layout as TBB
People use downloaders/scripts to Download TBB. (There is torbrowser-launcher as well as tb-updater and perhaps more.)
In future, I am sure people will want to use downloaders/scripts to do the same with Tor Messenger. Likely those TBB downloaders will be transformed into general TPO downloaders.
TBB uses https://archive.torproject.org/tor-package-archive/torbrowser/. Could use use a similar scheme please? For example just replace torbrowser with tormessenger, use other version numbers, but otherwise keep it as similar as possible.