The previous Discord server was hacked so I've created a new one. https://discord.gg/EDAsVq63TW Third time's the charm.
I just noticed that the Game Boy version of Yoshi has its own leaderboard. Game Boy platforms should probably be removed from this leaderboard.
I worked out another way of wrong warping to the princess' chamber (kind of). I'm wondering if it would be considered acceptable in an actual speedrun.
With this method you write the instruction JMP $8FE3 with koopa shells instead of JSR $8FE3. The final cutscene plays out mostly normally but after the curtain is lowered and raised again the screen just stays black while music plays. The game technically doesn't crash but it does softlock in the end. By my reading of the rules this would seem to be allowed.