By Joseph Currier, Wrestling Observer The ‘WrestleMania’ picture will begin to come into focus with Saturday’s show. WWE’s road to WrestleMania 39 will officially kick off with the Royal Rumble on Saturday at the Alamodome in San Antonio. What was shaping up to be the first WrestleMania season of WWE’s new era has been complicated by Vince McMahon forcing himself back into power. While Paul “Triple H” Levesque remains in charge of creative, it’s hard to believe that McMahon won’t exert his influence as executive chairman at some point. At all levels, WWE was a much better place with McMahon ou…