How is Krita? I’m on a Mac and my biggest problem with Gimp and Inkscape has always been lack of MacOS integration. Mostly with the UI but even shortcuts were wrong when I tried it. And the mouse/trackpad gestures were the dealbreaker.
I use Pixelmator, which hopefully continues to be a well developed pay once app, even though Apple just bought them. That and Sketch get me all the design tools I need for 2D and web.
Yeah any nag screen needs to be disabled for at least a period of time after a donation (permanently, or replaced with a quick thank you screen for ongoing contributions).
Clearly reporting finances and costs is nice to see too and makes it more compelling for contribute in my opinion. A few Lemmy instances are doing that now and it makes it easy to want to contribute if you can.