Yes, I would like to do just that, but I may need some help getting that going.
The snap store has a channel called “edge” built specifically for that purpose, I would just need help getting a nightly or weekly build uploaded to that channel. I’m currently stalled on migrating the snap build from Travis to some other automatic build system.
For flatpak, I (or someone) would need to host a flatpak repository completely separate from flathub. By policy, flathub only supports “stable” and “beta” channels for a given program. So an edge build would need to be self hosted somewhere else.
If you would like to try adapting the buildbot farm to actually do one or more of these builds, I’d be happy to work with you getting the tools and commands set up to do that.