The 7000 series from Samsung for plasmas will deliver a scaled back version of the 'Smart' feature set from their 8000/9000 series which saves some cash and hits a very good 'value' price point with outstanding image quality.
But, as said, the extended feature sets go hand-in-hand with the better performing displays and use those features or not, you will be getting them thrown in with the better displays.
I believe you meant HDMI ports in your first post, not USB ports... right? There is no reason to have USB ports unless you want some 'Smart' features on your TV.