@Jordan_River_Studios Pencil2D started as a simple app, and historically It was kept like that. There is effort being poured into changing the brush engine completely and replacing it with MyPaint’s brush system.
There’s even a development version where you can try this out. There you can create airbrush-like presets as well, so in that sense your request will be covered once it’s fully implemented.
If you have Windows and want to test this experimental version, please visit the dedicated thread in the forum (and check out the awesome art people have been posting already)