"New" Content for Icecrown
First, I just want to say this suggestion would only apply to the Icecrown realm. I remember a few years ago that Warmane edited the HP for Raid bosses on Lordaeron I believe to make the experience more Hardcore & challenging. I really like playing on Warmane, and I like playing WoW, I've played pretty consistently for 15 years, my account here will be 10 years old next April, and I've grown bored of doing the same raids & dungeons over and over. There isn't alot of variety at level 80 Heroics but there is a ton of content that is just being ignored or isn't worth playing altogether because it offers no challenge.
What I think would be a good suggestion, and would be really well-recieved by the players is if you took some of the Vanilla & TBC 5man dungeons and adusted them to be level 80 Heroics, just like they did with Deadmines and Shadowfang Keep in the Cataclysm Xpac. Simply make all the mobs level 80 and buff their HP. The only problem that I forsee is the Loot from the bosses but I think that could be a simple fix by just making the loot enchanting materials Or making the bosses have random drops of iLvL 226 or lower gear (or anything you could get from the Point Store minus TOC & PVP gear). Replace any cloth drops with Frostweave. Make the Mobs drop Random 68+ BoE greens. No custom items, no custom mechanics just an adjusted difficulty with level appropriate loot.
I've had this idea for nearly a decade, since Cata released, and I've always wondered why no one does it. Why not just give every dungeons a Max Level Heroic version? I couldn't imagine it's that hard to change numbers in the games coding script, plus your team has experience doing it before with ICC bosses. I know it would be a crazy work load to say "convert all dungeons" but maybe 1 or 2 as a test? Have the community vote on it and give feedback?
I hope this suggestion doesnt fall under the "custom content" clause of the rules because it's really nothing "custom", and if it does I would hope the GM would atleast entertain the idea and let people discuss it. I wouldn't want anything to change other than, like I said above, an adjusted difficulty level for low level dungeons. Ive always thought that rule mainly applies to custom classes, custom gear, custom BGs, ect ect. asking for things that aren't natural to the game.