Not one of the 100+ testers but I like the help pages on the right of the IDE, that will save loads of time from having to load up the bookmark in your browser.
Watched the sneak peak video and the media folder at the bottom looks like it might get quite busy and just from the video alone I couldn't see a way to group or even a quick way to search for particular assets.
Can AppGameKit Studio please allow nested file inserts. So an #insert file in your main.agc that also has #insert lines in that file. It would make it easier to build and share/re-use librarys and not have to have all of the library in the one file.
OryUI - A WIP AGK2 UI Framework