I had a LAN with some friends recently and started a new character for season 2. Season 3 starts April 5th, I'm going to Lansmash in Brisbane the weekend after, probably starting a new season with Lexi that weekend. Should be fun!!
I've never tried the Season stuff out.
I have a Barbarian at 70, a Demon hunter at 66 and a Crusader at 24 so the thought of a whole new character isn't too appealing.