At least the Pistons have a point guard on the roster now. But it’d be a good idea if they found another one soon. Because as Maurice Cheeks, the team’s new head coach noted Thursday at his introductory news conference, “The game certainly is played a lot different than when I was a point guard.” Certainly, he’s right, though even at 56 Cheeks still looks like he could hold his own on the court. But the need for a floor leader remains in today’s NBA, and it’s a need the Pistons haven’t adequately filled since trading away Chauncey Billups in the fall of 2008. They tried in the draft — first with Rodney Stuckey, then with Brandon Knight — and again this past winter with the trade for Toronto’s Jose Calderon. But since Calderon’s scheduled to be a free agent this summer, and his name wasn’t mentioned once Thursday by either Cheeks or general manager Joe Dumars, you do get the sense he’s moving on. If true, that leaves the Pistons stuck with the same two-headed coin in their pocket, and a couple of nagging questions: What do they really have in Knight, their 2011 lottery pick, and what do they do with Stuckey, who is entering the partially-guaranteed final year of his second NBA contract in Detroit? For what it’s worth, Cheeks talked about them both when asked a question about one. The conventional wisdom seems to be the Pistons new coach will be tasked with nurturing Knight’s growth into a bonafide NBA point guard, based on his All-Star playing career as well a his mentoring work as a coach, most recently with Russell Westbrook in Oklahoma City. But neither Cheeks nor Dumars sounded ready to fully commit to that project Thursday. “Brandon has some point-guard skills, and he has some 2-guard skills,” said Cheeks, who still ranks among the NBA’s top 10 all-time in assists and steals 20 years after his retirement. “So I’m not gonna label Brandon as just a point guard. Stuckey can also play some point guard. To say (Knight) can just be a point guard, I don’t think so. He can be a 1 and he can be a 2, as Stuckey can.”