That's awesome! Showing icons are great. I have to say, though, I'd really rather have it be less compact. Just show each floor as a separate line and don't bunch them up. I've always had a hard time reading lists that ascend or descend by going left or right before going down. Examples:
6 5
4 3
2 1
Is harder to scan than
6 3
5 2
4 1
These simple examples are both really easy to read. I'm only trying to explain what order I mean. It gets harder to parse when the list items are variable width like filenames or these icons.
I'd really rather just have:
6
5
4
3
2
1
Especially since it looks like there's going to be a variable number of floors per line based on how many icons each needs. A single column would be much easier to parse visually, and scrolling isn't a bother. It would work much better if all the icons lined up in neat columns.
I really appreciate all you do for this game! I do hope you reconsider the layout of the list.