Hi Rafi,
Personally I haven’t made the step to Catalina, but helped out fellow developers.
There’s a gotcha on installing the old Mac Java 6 installer, which is still needed for older Servoy versions.
The 2019 versions run without any problem.
Running a 15 inch Touch Bar MBP (2018) myself, I like it
I don’t know what your specific question on the 16 inch MBP is, but Servoy is very capable of handling that extra inch