Renaming is good only until name will be taken from nickname and easy to pronounce. I personally feel that if name of city will be made on any legend then should use only some part of name like Gandhinagar, Modinagar, Jamshedpur, Tata Nagar.
Full Names like Deen Dayal Upadhyay, Shahu ji Maharaj etc. will always be tough to pronounce in talk and used with old names only.