IMO, other than luck, assembling a championship team is about making bold choices. C's have a lot of likable and nice pieces but they need to make a bold choice to take the next step to become a contender. That may entail trading away crowd favorites like Crowder, Bradley or Smart, or on the flip side, sticking to their guns because they think one of them will become special.
I don't think it's realistic to keep all the good-not-great talent we have right now, unless everyone takes a hometown discount. At some point, C's have to combine those good talents for a great one.