Wanamaker is fine for a 3rd string PG. I trust him more than the rookies. He had a bad game, he has played a lot better than this lately. Semi, Kanter and him were all bad today, it happens for various reasons.
Our roster must be pretty solid if we are up in arms about the 3rd string PG.
"3rd string PG" is a really misleading and outdated term. This makes it sound like when everyone is healthy, Wanamaker doesn't even make it on the court. That's obviously not the case, because Smart plays lots of different positions. Wanamaker is clearly part of the rotation right now and he's just not very good. In fact, a lot of the bench is not very good, especially on offense.
Even in a tighter playoff rotation, Wanamaker is going to play because he's one of the few backup guards who can be relatively trusted to handle the ball, and also because almost everyone else is a totally green 20 year-old rookie.
This team is proving to be a lot better than any of us expected and while it's still a long shot, could be a contender THIS YEAR. With the team's really unbalanced roster construction, they're sacrificing experience and depth for quite a lot of rookies who don't really project to be stars and can't really be trusted in a playoff game.
Of course the trade deadline has passed and it's too late to make a big move, but there is still the buyout market. Even if none of the available guys are a slam dunk, would it be worth it if they were a 20% improvement over what we have? What if it's a wing or guard who can actually reliably score 10 pts in a playoff game? We have no Poseys or Houses on our team, and just because Tatum and Brown are young doesn't mean you should do nothing if you think you got a shot one year. Last I checked, Kemba and Hayward are smack dab in their primes and they don't have a lot of years left as stars.