today I made my first test run with the simulator (5.1.6). After some try and error everything went just fine !
I like the easy integration of Spice-Models from suppliers and it is a very good idea to make nodes interchangeable !
I do not understand why the file dialog expects .lib files by default but works well with .spi files ?
Only thing I would criticise is that there seem to be no possibilities to use differential cursors and probes and math-functions ? But I guess the Interface will become more sophisticated with future versions.
I was sceptical first but now I think this is a nice addition to the KiCad system !