If you don't shoot sports or wildlife, keep your D7200. You're not going to gain any IQ and the gain in cleaner high ISO is minimal on the D500. If you have money burning in your pockets, spend the extra on a nice quality lens instead.
THIS is the answer that I would expand on. With what lenses do you have?
If you have cheap lenses it doesnt matter what camera body you buy, in fact buying better cameras will show the imperfections in the lenses more.
If you have the lenses already then the freedom is up to you. The D500 is basically the D5 with a crop sensor and the fact that all the reviewers are saying should you buy the D500 or D750 (which is still an awesome camera) and they are saying go the 500 route says a lot ...
Keep the D7200. The D500 is pretty narrowly focused on action/sports photography. I agree with Blacktop, spend the extra on a good lens instead.
The D500 is not narrowly focused. I dont shoot any birds and I seldom shoot motorsport. I have used the D500 for ALL scenarios, Models/Portrait photography, Food/Macro photography, Long exposures and the D500 has handled it all superbly. It is geared towards action with the buffer however that doesnt mean it is "worse" at any other type of photography
I only very recently upgraded from the D600 to the D500 and I was going back and forth between the D750 and the D500, it took me going into a camera store and playing with it to work out which one I would like. Maybe this is an option for you with the 500 and 7200, or even get them out on a hire and compare both sets of images etc.
Personally I didnt think I would like the "add on" features of the 500 but Snapbridge letting you put your pics straight on your phone is awesome as it the tilt screen for low or high angle shots