TL;DR
There should be a specific symbol for the Deconstruction Planner item "Items On Ground" that appears in the Decon Planner, for easy identification in the toolbelt.What ?
Honestly, I don't have any terrific ideas for what the icon should be. Maybe a bot in flight or taking off, possibly holding something random (like an iron plate).Why ?
So I can remember which deconstruction planner is the one I want to use, at a glance!There may also be merit in defining icons for another two of the four 'red X' filter options. "Entity ghost" and "Tile ghost" should probably also have icons if "Item On Ground" gets one. I can imagine those being some variety of little spoopy sheet ghosts. "Item request slot" doesn't need an icon, and (unless I'm missing something) should be removed from the list of filter options. This might become less of a problem once I upgrade to 0.17, because (IIRC) using the toolbelt to reserve a deconstruction template will reserve the specific one to that slot forever (as opposed to before, where they're easily switched by accident). However, I still this this proposal has merit because I forget things way more important than which deconstruction planner is which all the time.