And TNG can't be shown in HD because it doesn't exist in HD. How many more times are we going to play this game?!
We all know it was finalized in 480i back in the 80's/90's. But that doesn't stop it from being broadcast by HD providers nor does it stop it from being watched on HD displays. As is.
Whether or not you can enjoy it under those limitations is up to you.
Bud..just take one of the TOS DVDs..run it on a BR player..then take a TOS BRD and run it right after..same episode..You WILL notice a difference.. Unless one is in denial and has bought into the "TV show as Art" crap...