It's been nearly two years since a joint venture led by Champion Partners rose to the top of the investor heap bidding for a 18-story mirrored office building near Turtle Creek Boulevard on the steps of the courthouse. A successful $64.2 million bid later, as well as more than $10 million in upgrades, the Dallas-based real estate investment firm has unveiled the new look of the tower, which has been rebranded Parkside Tower at 3500 Maple. "The whole idea is that right when you walk into the building...