I don't think it's surprising that the media and fans underestimated the team. You'd have to have been remarkably prescient to have predicted the improvement of we've seen in so many players - never mind to have been certain of the chemistry and "fit" provided by Kemba. Not saying many here didn't play the "what if" game with our roster, but it would have been impossible to know for sure that we'd see clear improvement by Jaylen, Jayson, Marcus, Gordon, Daniel, Brad and Rob - I'd say significant improvement in JB, Rob, GH and Theis.
And speaking of unpredictable, maybe the most exciting and unforeseen thing about this team is the talent of the rookies. Three rookies are already getting real PT (GW, JG, CE) and 3 others seem that they could possibly contribute at some point (TW, RL, and Tacko). Given the current roster, this team hasn't become what it will -- and then there is the possible use of assets in a trade.