He can't help but seem a bit interested in that because oh! The treasurer. That makes...almost all the supervisors complete, unless he's forgetting someone (which Strange knows is unfortunately highly plausible.)

"Well, the Ringmaster will be happy to see you've returned. And don't worry about the show. It's entertaining, but I've learned there's quite a difference between show magic and useful magic."

After all, while it might be fun to do the flashy show-offy sort of spells, there's very few situations where something like that could actually be of use.