I ran out of room on my scene tab the other day and now I am running into issues. I can no longer drag entities from my scene list because they aren't visible on my scene list. Also it is hard to find where I placed things and overall the scene tab is pretty useless at this point.
I would suggest 1. Don't allow the scene tab to end.
and 2. A search function in the scene tab where you can type in a name and then all the entities in your map with that name will appear on the scene tab.
Little video just to show what I mean more clearly --
https://www.youtube.com/watch?v=jagw-0OK-Yg&feature=youtu.be