not all the vanilla forum users are good at coding and merging files.
I think if you "publish" it on a one click hosting server many users would use that beta software without knowing the risks of beta software. There could be major security issues that are not yet revealed.
My personal opinion is that it should be easy to use the official and stable version and not as easy to test the unofficial version.
Ah these are my pet hate. it is not just the beta version it it is really out of date versions with security holes. It is version that have been forked, without the the person being aware.
These are all real examples that have encountered, form people coming here with problems as a result.
Installers suck in general.
grep is your friend.