One of the major things about Scala 2 vs Scala 3 is the removal of many of the type system warts, in particular the type hierarchy now forms a lattice (if I'm g

One of the major things about Scala 2 vs Scala 3 is the removal of many of the type system warts, in particular the type hierarchy now forms a lattice (if I'm getting my terminology right) rather than being rather adhoc in various places. Lots of other small annoyances like the whole tuple situation have also been fixed. EDIT: Plus: intersection types, sane macros/inlining, etc. Unfortunately (for me), some of our projects still have to cross-compile to 2.x, but that's irrelevant for greenfield. I'd give it a whirl -- it's a great improvement over Scala 2.x.