The whole thing is a good idea, but going for Touhou 15 was a bit much. Also, I thought of many problems as best as I could on TH15.
List of problems or questions that might affect the player:
1. Hard mode (Especially using on Legacy Mode) might be a bit much for the players.
2. We don't know what mode we should use. Point Device or Legacy Mode?
3. If we play on Hard and manage to lose all our lives, do we still have to post our replays (Best run even if it's outdated)?
4. Livestreams can also be proof for the player. Right? (In case of players forgot to save their replays)
5. If the player's name was different on Discord, should they change their nickname in order to qualify?
6. What if they don't have the game itself? Would you provide them the game?
7. Junko is OP! I don't want players to get triggered at this game. Especially on the Hard Diff.