It's good that JMS is off Diana's title. His time at DC has been one big 'Meh'. Nothing like the excitement connected with his Marvel work.
The costume change got headlines for a day, but nothing after that.
As far as the debate about their traditional look - Wonder Woman may have many practical problems with her costume, but Carol's costume makes no sense at all! Nothing but an excuse for cheesecake with the leather boots and gloves, plus the unnecessary mask...
Power Girl looks better than either of them. 😉