I see that “swing” is not something you have implement on any of your plugins, which is a big “thumbs down” if you are selling creative tools. Being limited to “squared” rhythms is very… huh… limited…
I’m sure users would appreciate it a lot. Consider that for your future updates across all your plugins.
Other than that, I think Loopmix will be a tool I will be using very often. There are a few other tweaks I would make, but I will be sharing my suggestions as I play with the plugin. Good job on this one!