This is fine. I tank Heroics and I’ll be using RDF once they add it because in Wrath you’ll want to do 12 Heroics per day per characters to min-max (And you can bet your butt most the Classic playerbase will do it) before you have free time to play the game. I’d rather be out in the world PvPing, doing quests, farming, while I queue.
Flying to 12 Heroics and forming 12 parties per day for them is how you burn out, and it kills the open world since players can’t do anything while staring at LFG addons and flying to 12 heroics before they’re able to freely go out into the world, it’s happened on PServers before. This isn’t speculation, we’ve seen this on PServers.