Search/Filter in fieldset

I have a ton of custom blocks, is there a way to add a search/filter field in the panel dialog when adding them? See screenshots for the idea (this is only an excerpt of the blocks).
Grouping them doesn’t really help, too many blocks, too many clicks if groups are closed and open groups don’t help keeping the view clean.

idea with a filter for “logo” showing only the matching custom blocks:

something like “search: true” as for files would be great.

fieldsets: 
  search: true

Is there any way to achieve that?

Pretty sure there is a way to achieve that but changing the dialog, but no out-of-the-box solution with just a blueprint setting, I’m afraid.

But agree, would be a useful feature if you have many blocks => https://feedback.getkirby.com

okay, thank you. Will consider adding the idea as a suggestion.