Limbo parkour has been requested twice previously, while I think it should be added, here are the provided reasons for rejecting previously.

1. There's no start point. Even if the mods establish one, we'll never be able to tell for sure if everyone will start at the same exact spot. That can lead to a couple milliseconds difference at the end, which will for sure make a difference when the stage gets maxed out, since it's like a 10-15 seconds run;
2. There would be a need to use an external timer. Different external timers give different final times.
3. It's easier to cheat by cutting frames/speeding up the recording.
4. From my knowledge (correct me if I'm wrong) there's not really a way to stay in limbo unless you're on queue.

For #1, in regular parkour you can technically start up to a 1 block distance. I propose the start point be this block edge here, where you can shift off to get the near exact starting distance, timer beginning on the jump off of this block.

#2, any mods should know how to use SPRT or some commonly accepted retimer, not to judge it's just not very good if mods for a game don't know how to retime. You can set specific start and end times, for example, time starts on jumping off the block and ends on reaching the highest position in the Limbo map.

#3 much easier to cheat in Hypixel parkour, any developer (and there are already mods that do this), can forge or modify chat messages, which is why it would make more sense for every run to require video evidence, because anyone can easily cheat to 4th on any category.

#4 You can with /limbo.

Not trying to make fun of anyone who disagrees with me, I'm just simply pointing out there is a way to make this work, the only problem is that retiming might be a little time consuming as you'd need to identify the exact frame you land on for example, the highest block in the map.

Here's a proposed rule-set:

Time starts on jumping off the block to the first stone block platforms, and ends on the frame where you stand on the highest block in the map.

No block breaking or map modification of any kind is acceptable before the run is begun.

I just think it would be really fun to watch people optimize probably the easiest/simplest hypixel parkour. I don't know if the mods would be down to retime that, and I'm not sure if I'm fit for moderation anymore, but I personally would find it to be worth it.