Love the server. For the end game, since I have read several times that apparently Warmane has somehow buffed the Dungeon bosses hp and attack power, why not implement a MYTHIC SYSTEM kinda like Legion? Instead of getting a headache about scripting new mechanics, just implement a linear power progression in terms of enemies spawned and their attack power. This would give an endless amount of endgame options due to how many dungeons there are. Another suggestion would be to scale all dungeons to level 80! Instead of worrying about loot, implement the current endgame loot to these dungeons to give diversity in game play and keep older content accessible and not dead. Just my two cents. Love the server's coding though. Best one yet I think.
Because the entire point of the server is to provide a Blizz-like WotLK experience.
Also what you're asking would not be simple to implement and there is no shortage of existing content that needs to fixed. Your idea would take resources away from fixing or maintaining the existing content.