Wayfair (W 3.34%) is trying to stage a comeback, but it's operating in a challenging environment, making progress an uphill battle. The digital furniture king continues to try new things, and while there have been wins along the way, it's not out of the woods.The average Wall Street consensus is a 42% gain for Wayfair stock over the next 12 to 18 months, with one analyst seeing it rise 82%.Let's check out what's happening. Slow real estate = slow furniture salesWayfair made several missteps over the past fe ...