If you hire a staff with looks as a primary focus, chances are that you'll end up a staff that while easy on your eyes, will have issues working together and hence make YOUR life at the office more difficult.
When I'm looking to add/make changes to my staff, once I know a candidate has the proper skills/requirements/certifications for the job, the number 1 thing that I look for is the chemistry between the potential new employee and the rest of the staff (to the point where for many job positions that I've filled in my office, I won't offer the job to a candidate until they've gone out to lunch with the rest of my office staff (when both myself and my business partner AREN'T there) so that my staff can see if they can get along with this person, and also freely talk about myself and my business partner to the candidate. If my staff likes the person, then I'll offer them the job. If they don't, then I usually won't offer them the job.
Office staff dynamics very often makes a HUGE difference in how pleasant an office is to both work in, and also be in from a patient perspective, IMHO much more than what a staff looks like