My perfect baking table would:
-be very, VERY sturdy so you don't have to worry about it moving while kneading or rolling, etc...
-have a LARGE, butcher block top with enough room to have a bowl of dough or batter and still have plenty of work space and a sheet pan to put the finished loaf (or whatever).
-have an easy-to-access place for rolling pins, bench scrapers, and the likes.
-have an open shelf for stashing pans with bread or whatever it is that you are working on.
-store ingredients for baking.
-have a cup (or some little container) that hung off the side for bench flour.
-be self-cleaning

The height is very personal. Make sure that you can comfortably shape dough without being hunched over but still have your arms reasonably straight... if that makes sense.

I messed up my back working on a table that was not the right height. Bend your knees while you knead
