Yes to hall. However, the Launchpad should be able to save the accounts it downloads, so that basically if it's unable to connect to the server, you have the accounts that you previously downloaded, the last time you started the Launchpad, assuming that for each new download the old files are overwritten (e.g if they were created while the computer was disconnected, or the servers were down or something); so maybe add buttons that say "upload" and "download", and retain the local save ability. I also take it that you'd log in using your forum usernames and passwords to access your cloud files.
EDIT: You should make a poll in the thread, it would be so much easier than going through every post just to see if it's yes or no.