It used to be that Launchpad would build the packages immediately, or with little delay. But unfortunately, this free service has been degrading as of late. The only way to reliably do this is by a private PPA server, but that would cost quite a bit in terms of setup and maintenance. Perhaps we can come up with a way to cover the costs for such PPA.
If funding a server is needed I'd suggest a new entry to give the issue some visibility. Assuming it goes ahead something prominent on the web page to show progress towards a goal. It does not make sense for a project like this to be struggling for the wont of a server.