Oh man, almost missed this UHC idea thread. I think it's definitely time for another season utilizing the Mumble plug-in, been too long for sure. Maybe even just use UHC 19's premise again, because hey, it was pretty great. OR, take UHC 19 and UHC 21 and blend it together where two teams will form of eight or whatever, and it's the first people who meet up until one team caps out. Would definitely be a lot of fun. Of course fixing the inter dimensional bug where you can hear people in the Overworld/Nether would be great.

The anonymous Dinnerbone UHC was a great success, next time masking achievements, things said in chat, and all the death messages not just x slain by x would be awesome.

Again, going crazy with the terrain settings would be fun, I know UHC 21 has increased Dungeons and UHC 24 had amplified. How about lava lakes everywhere or make the entire map a massive desert?

Really I think the key to a successful UHC is generally a premise. "Teams of three shrinking world border instead of teams of two shrinking world border" is pretty same-y and created some seasons that just blended together. The most successful premises aren't even the terrain ones I mentioned but ones that deal with the players. What about something crazy like you go to the Nether or drink a potion and that will remove the disguise from your name? Would create some interesting choices