From the top of my head, I'm going to guess people want (1) personable and agreeable bandmates with (2) compatible music styles, (3) musical talent and skill, and (4) can play instruments or roles that a band is missing.
So the interface should support users in presenting and finding these traits. If I were to design it, I'd have:
- Auto-playing music sample gallery. This is the most important thing to present. The current design asks the user to dig into Youtube and Soundcloud links — which is very high-friction and would have the user jumping between this app and other apps every few seconds.
- One-minute self-introduction video. This helps the user grok the general 'vibe' of someone.
- Allow users to connect their Spotify or other music accounts. Then show users their shared music interests. This can provide another clue about having compatible musical personalities.