The time related gameplay elements shown in the videos struck me as extensive, entirely unprecedented and exciting. Wow!
http://news.ycombinator.com/item?id=244594
But, of course, Chronotron is merely the time traveler's Donkey Kong, whereas this new thing is Starcraft. For people who are bored with regular Starcraft and have a desire to play n-way simultaneous Bughouse Starcraft:
"The company's innovation will create new sub-genres of games, starting with the game Achron." Achron is in the MTS sub-genre of RTS, to be pedantic:) However, the scope of differences in here make the term "sub-genre" seem unfair.
The new time related gameplay will demand a huge new strategic skill-set from the players. I don't think this will be true for Starcraft II. And you won't be able to learn this skill-set by playing any of the "old-school" RTS games.