I meant to answer this ages ago. I was too busy taking stars away from you, though.
It's very important to try to get a good match. The first step is taking a good look at your piano "self." What areas do you want to improve - add more repertoire, develop practice habits, improve technique, learn how to improvise, improve sightreading - what have you played, what can you play, what are your areas of improvement - as perceived by yourself and others.
With that scetched out, you can discuss this more with the prospective teachers in a consultation, which - btw - is important.
From your consultation you can better determine if the areas you want to focus on are areas s/he has an interest in teaching, and is able to teach. For example, you might want to focus on improvising, but the teacher you're considering can't improvise at all.
I've had five different teachers. Two were not compatible with me. My current teacher is great. Unfortunately, she just got a Fullbright to study with a well known pianist/teacher in France for a year, so I'm in the same boat.
One option I have is the Evening division at Juilliard. They have weekly masterclasses, with groups of about six pianists. This would be a different experience because it would force me to play in front of people, which I haven't done in about 15 years.
Another option is looking for another private teacher for that year. There are a few teachers in NYC that are influenced by the Abby Whiteside "school" of teaching/playing, and that might be interesting to imerse myself in for a year.