Fully upgraded runners get back to the battle tower right away, if you wait until they are out and then leave and return yourself. Since one is stuck, perhaps upgrading the runners will happen to change something to get him unstuck.
A combined package of the game and add-on has not been mentioned, but if the add-on itself does well I wouldn't be surprised to see that. Since you have the game already, the add-on will include all the main-game fixes and changes etc that will be in the next patch.
The experience you get from opponents is dependent on the level difference; if you defeat a higher level opponent than your character you get more experience, while lower level opponents may give fewer or no experience. Summoned creatures from an enemy summoner don't give experience.
When you mindread it costs experience points. They don't get taken off your total (so you can't loose a level, etc), the game just keeps track of how much experience debt you have accumulated, and the next experience you acquire (from fighting or quests) pays off the debt first, then starts getting added to the experience total.
