The game would be much better without flying mounts. I don't care about pvp either. I am saying this entirely from a pve standpoint. Flying mounts made the massive world feel a lot smaller and its too easy to get from one place to the other (fly up, autorun, afk). The world is massive and should still feel like it. I admit I'd miss my dragons and I do still use them, but that's only because with the way the world is right now its designed to be flown through and walking/ using a ground mount isn't always an option. Trust me though whenever I'm going through org, stormwind, or other areas friendly to ground mounts I do not fly.