[jvican]

> which has the potential to achieve better accuracy

The quality of the used names extraction affects accuracy, but not compile speed. I must say, Dotty and Scala are extracting about the same amount of dependencies, with some corner cases being covered better in Dotty (for example, changes in constant values).

I don't see a way Dotty can become a faster incremental compiler that doesn't involve adding the incrementality in the compiler.