Hi! My plan is to allow adding buttons to Scene_Menu to call Common Events, and that will be the final feature update. Since the plugin is already quite large, I'll only focus on bug fixes after that to ensure stability. This plugin is mainly for custom images, it's not like SRD HUD Editor for creating other windows.
I'm not sure if it'll be compatible with VisuStella, as it seems the author has encrypted their plugins to prevent anyone from reading the code.