I'd be surprised to not see the Knicks. With the '95 club being in last year's iteration, and with the inclusion of the '94 Rockets this year (New York's NBA Finals opponent), the classic Knicks seem primed for another appearance.
Meanwhile, I wouldn't mind a classic Shaq/Kobe Lakers team. On one hand, this team can be assembled pretty well by us on our own (players like Bryant, AC Green, Robert Horry, Ron Harper and Derek Fisher will probably already be in the game and the Staples Center has the same court art as it did back then). But on the other hand, there is a part of me that'd like to see 2K deliver a prime Shaquille O'Neal player package. It seems just as 2K was developing their signature packages, Shaq was on the decline, so his dunks weren't quite as Shaq-like in 2K as we'd expect (and rightfully so). It'd be cool to see him with a real arsenal. Also, a young, fro'd Kobe Bryant wouldn't be too shabby either.
I'm not even a Lakers guy, but I think it'd be fun to relive. With the inclusion of the '02 Kings, a 2000's Lakers team seems logical. Though, I feel what you mean. That feeling of, "I hope they don't include a recent classic team in lieu of a real classic team." I've decided I'm probably just going to be cool with whatever they throw at me. It's all a bonus. Plus, as I mentioned, it probably wouldn't be too hard for 2K to make a '00 Lakers team with so many things already accounted for (jerseys, arena, court art, many players).