Haven't tried it yet, but holy. I love this project. Thanks for all the effort!!
EDIT: After trying it just a bit (Timing Helper and Hitsound Studio) I found it not that friendly to use tbh, also the documentation has too much text and makes it tedious to fully read.
Would suggest to make some short videos (gifs maybe) showing the basic functionalities of each tool. However you might want to wait until you get more feedback so you can improve the gui.
EDIT: After trying it just a bit (Timing Helper and Hitsound Studio) I found it not that friendly to use tbh, also the documentation has too much text and makes it tedious to fully read.
Would suggest to make some short videos (gifs maybe) showing the basic functionalities of each tool. However you might want to wait until you get more feedback so you can improve the gui.