I can confirm what Shebby said. The game became great again when they took out the stat buffs that the skins gave and moved them to a droppable mod. You never needed the DLC to play on the maps, only to host them, so that isn't such a huge problem. Besides the DLC goes on sale for 75% off every time they put out a new one. The only DLC that you needed before they buffed the skill tree by a ton was the courier pack if you were a min-maxer.
TLDR: A lot of games can climb out of their graves, but people will still think they are dead.