I wouldn't exactly be opposed to this. I'm more bothered about ladder only runewords and runes, uber Trist and diablo.
At the very least add then to single player, but I like to see the ladder restriction removed for runewords.
Ladder Runewords will be available in SP.
We will have some more info on seasons/ladder. I would expect it wouldn't be right at launch for the start of one and more so around a diff time that we specify after launch.
TCP/IP support will not be available in the upcoming Beta or the final game. After careful deliberation, we will no longer be supporting this option as we identified potential security risks and are committed to safeguarding the player experience.