Maybe I’m biased, but after working with Play and SBT for a few years, I’m happy to move away from it in the near future. Scala HTML templates with bad IDE support are still what my nightmares are made of… Also wonder if there are any conflicts of Scala + Kotlin interop. But always nice to see companies willing to invest into missing tooling etc. and publish that as open source.

Out of curiosity, what does the modern Play framework give you that you can't get from VertX ?

Often is based on what the company already has