Thank you for your support!
1.In fact, you can use switches to control the visibility of doodads, just see the setting when you place the doodads.
2.It is compatible with Ultra Mode 7, you can see more information there:https://forums.rpgmakerweb.com/index.php?threads/rmmz-grid-free-doodads-work-wit...
3.I don`t consider to translate the plugin to MV. because it is made to replace the obfuscated VisuMZ Doodads plugin in MZ.
I see your url and Knight Editor is a good plugin.
I may can solve the issues you face when you use it.
my discord:
Qiu Jiu#2185