Some apps have important new features in their betas.
Some apps are no longer being developed, but the last release happened to be a beta (e.g. Winamp 5.8 beta)
Some apps are developed really, really slowly (e.g. Teracopy)
Some apps just remain in perpetual beta... forever...
If we could at least have a per app 'Enable Betas' option... It could include a disclaimer, etc.
A 'Globally enable betas' option might be included for completeness, but the per app one is enough i'd guess. And this would allow us to deal with any extraordinary circumstance that requires it, whatever the reason is.
Would be nice since some Software Vendor expect pilot groups to role out their Beta Version instead of delaying Stable Channel updates. This is important for making sure Security Vulnerabilities can be patched in the shortest amount of time.
Even hiding Beta Versions of Applications offered by Vendors until enabling/opting would still be helpful for those that need the update.
Much needed in the case of applications with known security vulnerabilities - often the fix is included in a release that is not mainstream or considered stable however the security risk and requirement exceeds the need for GA or stable release versions. Having the capability to add/select beta releases is a necessity.