To sum up my experience with pr-downloader so far:
- Getting a list of available release versions is not trivial: After I got of this thread the info that helped to interpret the lines in versions.gz, I can crawl now through the long list there and understood what to look for.
- A standard task like downloading a specific version is not obvious and not documented (at least I didn't get it from the available documentation). Well, you could say it is now in this thread

- A standard task like getting rid of your old version history seems to require to delete all files and then re-download the games and other files in versions you want from scratch
- Once you understood how to use it it works, but IMHO the average user will be lost. Well, me and my friends didn't even notice that there are new versions until I accidentally spotted the thread by Ares

- Very minor point: download is quite slow compared to springfiles mirror
So, I can't agree that it is "
far better" than springfiles download for all use cases
(and after this experience the sentence "That fact isn't up for debate" sounds to me a lot like a sentence parents say to their kids when they run out of arguments and just want things their way).
Rapid surely has its use cases where it beats file download and I can see that it can become the tool of choice. But AFAICS it's not yet. I will for now stick to
http://ba.repo.springrts.com/builds/ (thanks nixtux).
Good thing is that the dependency download works. With maps I always had problems until I gave up...
Thanks again to Floris. Today I spotted the line in the changelog with the changed widget folder. Have missed it before, my fault.
One thing I noticed with the newer BA versions: if you start a game (for testing) with just 1 player springlobby crashes badly. So always make sure to add a NullAI
