Anthony Davis is long, but was a PF this year. I think they will add size so they can combat the Gasols. Whether that means a guy like Boogie, Chandler, Bosh (not really a true center, but long nonetheless) or Howard (I don't think Howard makes the roster) we will see. Aldridge is 6'11", but I'm not sure I want him defending a good center. I guess we will see.
The 2014 FIBA Championship team had Plumlee, Cousins, Davis and Drummond.
Previous teams didn't have as much size as there aren't many countries out there with skilled big men. That being said, if both Marc and Pau (in addition to Serge ibaka) play for Spain that would be a lot to handle for just Davis and Aldridge.