Foliage Thumbnail show selected (checked)

Can I ask, if there is something planned to change the thumbnail of fliage looks? I like the view, but can’t tell if i have it selected for paint or not. It would be awesome to see some frame, or color overlay, or something that would tell me that I have chcecked this foliage. Right now i always have to switch to list view and there i can see what I’m using and what not.
Or just always keep this check box on all thumbnails visible… why hide it? I have 70types of foliage in level and i have really hard times to manage my selection.

Thank you!