Assuming they release WotLK on Anniversary realms after TBC what's everyone's thoughts on if they should stick to original WotLK of if they should do Titan Rune dungeons (Heroic+, Heroic++, and Heroic+++) again?

Feel like it's inevitable. They already have the infrsatructure. They wouldn't want it to go to waste.

I personally wouldn't want any of these kinda-sorta mythic+ replacements. But I wouldn't mind a baseline difficulty increase for all group content. I still have fond memories of those pre-nerf Cata dungeons where you had to crowd control and prioritize nasty mobs just to beat them. And with the greater overall game knowledge across the board, even more difficulty is welcome to keep things fun.

They'll probably be back. In fact I wouldn't be surprised if we saw something like that added in TBC this time.

I feel like they will most likely add them back. Not necessarily from the very start, but rather as a catch-up tool down the line.

I'll admit, I liked M+ when they first introduced it. But over time it became just another avenue of mobie game-fying retail. I'd like to keep it far away from Classic.