That's a nice addition! Did he make the cut on the All-Time Pistons? I'm guessing not on account of everyone else already on the roster. Still, nice to know people are still being added.
As it pertains to those older teams, it'd be cool to see some of the old 2K12 options pop back up at some point. You can bend and meld the game with sliders in order to play through believable games with 1980's teams on forward. But once you get back into Cousy/Wilt days, you kind of need some help from 2K. 3-point line toggle, specific rules, maybe a couple more super basic dunk packages that don't break away the rim, etc.
I know, super classic customization is such a niche addition that it's hard to justify, but whatevs. I actually feel like those kind of unique additions could draw some folks into playing with those teams who otherwise wouldn't. Or, if the 3-point toggle or rule changes were available for all teams, it could put a twist on standard games. I think it could be kind of cool to be able to pit the modern Warriors against, say, Wilt and the 60's Lakers but with no 3-point line.