D3 is the only one of their games that can kind of work on consoles. WoW would be terrible with the massive amount of hot keys and SC requires too much clicking around (we already saw how bad the N64 version was).
WoW would honestly be too complicated with things like Curse Client, patches, xpacs, and the fact that the game is slowly dying out anyway. Plus they are gearing Project Titan for the next MMO they are making so maybe that will come to next gen consoles.
WRESTLEMANIA 29Who will go toe to toe with The Great One?
Mods are a pretty big part of WoW and if you can't implement them on a console, I doubt many people would bother with it.
Mods would work fine on a console.
I going to assume he means things like user made maps, custom GUIs, and the various community made apps to supplement the game, like tools to reroll missions until you get the reward you want, etc. So no, they would not work on a console, it's something very different.
Most of those things run in the background or modify files in the game itself.