Two things I feel deserve note here beyond what others have said:
1. Sandstorm has not "gone"! It is still here, will still be worked on, and all of the current services they run will continue to run!
2. As much as I am a fan of Sandstorm's approach first and foremost... I've been following news from Cloudron and they are pretty cool too. When I first looked at them they were closed source, and now they are open and supporting self-hosters and everything.
And I love the UI, but I pretty much... hate modern UI.