Hi,
Thank you very much for your kind words and for your interest in the plugin!
The plugin provides extensive customisation for RPG Maker’s standard menu scenes, including the Title, Main Menu, Item, Skill, Equip, Status, Shop, Options, and Battle scenes. You can reposition and resize windows, customise window backgrounds, buttons, images, animations, particles, and many other visual elements.
However, I would not say that it can customise literally every element from every possible plugin. For example, the standard back arrow can currently be repositioned or hidden, but its image cannot yet be replaced directly through the editor.
Regarding VisuStella, compatibility depends on which VisuStella plugins are being used and how heavily they modify the same menu systems. Basic compatibility is possible, but I cannot guarantee compatibility with every VisuStella plugin or combination. Because VisuStella plugins are obfuscated, full 100% compatibility with them isn't possible.
I do plan to continue improving the plugin with bug fixes, compatibility improvements, and useful editor features. Updates to the plugin are included for existing customers after purchase, although I cannot promise a specific feature or release date in advance.
You may also send me the name or link of the skill-tree plugin, and I can check its structure more specifically.
Thank you again!