Well these are things that could be added to fateuhc to make it a unique plugin,
since I have not seen a plugin with these ideas.

Add new "scorecard states", for example, when you are in / staff, where it is different and editable,
where you can add variables like tps, disappear "on / off",
staff chat (a chat where only staff members can speak), entities in the sv.
New variables: "donors", "connected staff members", "game count, for example," UHC-GAME ("Game number variable:" 1 ")
(let this variable go in the title)
Animations in the bookmark: "Type fazon.gg, where your ip / twitter / store changed in the bookmark,
making all the server details visible"
Permissions for donors, people with rank on the server:
Add people to the whitelist with a limit, for example
(vip.wladd.1 - add a person to the whitelist and so on, we would put the limit in the / config)
That a donor can enter the game when the uhc has already started.
Editable "Config" menu:
It would be a plus that the config menu that players see can be edited in a /config.yml where
we can configure the position of the items, lore, item id, menu slots,
add and remove configurations. This would give us a way to further customize the server
A / settings for users, where they can activate to see the players,
activate the bossbar, activate the scoreboard, activate or deactivate the "Dms"
More holograms "Top Kills / Top Wins / Top miners / Top uhcs played"
New scenarios, the main one would be "Do not Disturb" which means
that when 2 players are fighting a third party cannot hit any of the 2 players tagged,
this would work as a combatlog, with a time of 30s that the tagging lasts if they are not fighting
Old tablist of the fateuhc v1, where the tablist was customized, I know that it generates lag,
but they could add that this option can be activated and deactivated

New DeathMatch system:
This system may be crazy and maybe they won't add it but it would be a good idea, it consists of, when they reach a number of live players (amount that can be edited in / config), the players are teleported to a world editable by we, as a schematic, that the plugin load and paste that schematic in an empty world, where this schematic would have the following characteristics.
(I don't know if you've played a practice "Sumo" tournament) the idea of the map would be like this
A spec / wait zone
A fighting zone
I attach an image so that you can understand my idea:
https://gyazo.com/4ce19f3ac918587f7a6f46d29eb7e04e

The system would work just like a sumo practice event, with the difference that when the fight is over, it will take a few seconds for the winning player to loot the items (time editable in / config), the system that assigns 2 players ramdom (not a player who has already fought) to move them to the green zone (fight zone), while the other players watch the fight from the red zone, where they will not be able to hit, drop things, or use a lava tank, etc. , they could be frozen) in the green zone that would be a 25x25, that is like a builduhcffa system, where the blocks disappear every "time" and that the water and lava are immobile. (That we can set the zones, for example / setspeczone, / setfigthzone) (as if we were using worldedit) (of course the world would have to be square)
By adding this deathmatch system they would have to add a scoreboard for this phase of the game, with new variables, (player1, player2) (time to loot)
I have not seen a complement with these characteristics, sorry if my English is not understandable, but I am Spanish and it is difficult to make me understand in English, if you have any questions you can ask me, I would like you to try to add this deathmatch system as it would be entertaining .