Subjective: I hope that there will be additional content to spend my tickets on, or if they could be traded in for influence. The way I see it, if the architect does not have add-ons, soon I will have purchased everything and by the end of one year, I will be full on tickets with nothing left to buy.
Objective: The mission architect has a great many possibilities. An option could be added in to test a different powerset in a mission, instead of always using your own. Or if a player could take away a hero's powers, and not his levels to simulate that situation from comic books.