For example, they should make an epic game that has single player and multiplayer. There would be a standard multiplayer tdm/dm/capture the flag mode that has a max of 20 players per game, individuals could host servers and there could be dedicated servers. There can also be custom user name maps. you would not use your character from the single player campaign but preset ones.
Then the other game mode will be MMO like, when you reach the top level in the single player game, it gives you the option to join the MMO server which will function as a massive PVP war like server with PVE elements and new quests, it would be like a continuation of the single player where there is a massive war. I remember reading the next game would be the Akavari invasion of Tamriel. There would also be new items in the MMO server that you can't get in the single player game.
This is what the game should be! Not some MMORPG grind.
Sadly I don't think my dream for the next Elder Scrolls game will come true, its going to be a MMO. Just search "Elder Scrolls MMO" on google to see for yourself.