Does Having Mideheaven in Gemini Mean Anything Special?

As far as career is concerned, you also need to look at the 2nd and 6th house. Based on Gemini alone, there is a need for variety and versatility or you will get bored at your job. Writing, Journalism, Design and work as an agent are perfect outlets for Gemini on the 10th cusp. Staying behind a desk won't be your cup of tea. unless you are involved with several phones, a couple of computers etc... and plenty of opportunities to communicate. Because it is a dual sign, you may be involved in more than one career at the same time. At the very best, there is an impatience with routine and restlessness is a common feature here. As far as dancing, you will need to look at Mars, Moon, Saturn which are important planets for muscular strength in the legs, timing, rhythm and with Saturn, the patience to practice the same routine over and over and over again.