I find exploring rooms/subspaces in a room very hard to scan

### Steps to reproduce

I am opening the Element Space and looking to see which subspaces/rooms I am part of/which I still need/want to join.

### What happened?

I see a massive list of rooms and subspaces which I find hard to scan.
- I want to see which rooms/spaces I'm in/which I'm not in. Does the hover over showing "join" or "view" mean this, or does it mean that the room is peekable/not peekable? Could I see this information without hovering?
- I want to be able to see all the top-level subspaces to give me a proper idea of the shape of the org - showing me the full tree with _very_ little indentation means I can't quickly grasp the overall structure
- I find the suggested flag to be hard to scan - it is not a distinctive colour, and appearing at the end of the name doesn't appear in the same location for every room

### Operating system

All the operating systems

### Application version

Element Nightly version: 0.0.1-nightly.2021090801 Olm version: 3.2.3

### How did you install the app?

Website

### Homeserver

lant.uk

### Have you submitted a rageshake?

No