Don't worry about the WH, because they will get nerfed pretty bad with the 'Return of The Hero' update. Battle Mages will get buffed up pretty decently.
If you want to see skill changes, please click these links (each link is a part):
-- Part I
-- Part II
-- Part III
If you're wondering why they're in parts, it's because these changes were made in a test server that went live to the official server. When we receive the next big update (Return of The Hero), we will receive all the skill changes in every part at once. We should receive this update in about 6 months from now.