https://github.com/cvogt/cbt [0] is under very active, heavy development and seems like a potential beacon of hope to SBT-haters (including myself).
The CBT author and community seem determined to genuinely make it a completely viable SBT replacement (it already works pretty well).
Given that during the earlier part of my career starting a new SBT project would involve 1 - 2 days of wrangling every time (there's always something simple that needs changing, that's inevitably harder than it need be in SBT), I can't wait to see CBT mature.
[0]: In their own words: 'fun, fast, intuitive, compositional, statically checked builds written in Scala'