What if there was a category where we fight all the cube bosses, fight all the non cube bosses, or fight both
There could also be a category for solo or coop

It is hard to balance due to people having different characters and artifact rng.

True, it's absolutely not 100% fair to everyone, but it'd still show the fastest possible times to complete a somewhat common task, and it'd be archived on a site dedicated to showing fastest possible times in games.

Also, you can just level up your account to be better

I want to mention that I really like the idea of an boss speedrun.

Imo the hard rng of artifacts on top of players just not having certain characters compared to others in a game where you would have to spend hundreds, if not thousands of dollars to guarantee receiving characters it what makes it so unbalanced. Anyone that is f2p or just haven't gotten what are a lot of the meta-defining characters just can't compete to others that got lucky or paid for characters. Especially when it comes to getting multiples of the same 5 star characters.

This has pretty much been the reason why there has been no implementation of any "boss rush" or combat speedruns so far. Until there is a way to standardize what characters and Constellations people can have, there just isn't a real consistent way to regulate it based off of people's skill. Artifacts could be something looked over but even then that's stretching it a little.

Yet Katherine to Katherine is a category
And that can easily be considered unfair to those who haven't unlocked the characters that give an advantage to the player.

And if that was such a big deal, it can probably get split into different categories.

This site basically only deals with F2P content.
They put a lot of emphasis on equality.
If you want to do a speedrun with paid content, you might want to check out the Abyss Floor 12 Speedrun/Competition Leaderboards of Spiral Abyss Analytics.
https://spiralabyss.org/leaderboards?event=floor12
There is an Abyss Floor 12 Speedrun/Competition each season on this site, and anyone can participate. The site is open to everyone, with famous Streamer participating, and the top records are of a high level.
There is also a F2P category.
The world record in Ver. 2.2 was 1:51.


The current drawback is that there is no archive of the standings.

Also, some of my friends and I have our own rules for All Elite Enemies Speedruns, as well as s solo character boss speedrun and collect all the crystals and artifacts speedrun.

I think there needs to be some sort of comprehensive speedrun site that combines all of these, but considering the amount of work and consistency, it will be difficult.