Kerrigan will be a playable unit in most missions of StarCraft II: Heart of the Swarm. When the former Queen of Blades takes the field, she has multiple roles to choose from. Each role is called a Battle Focus and comes with a unique set of abilities. As the campaign progresses, new roles will unlock, and Kerrigan will acquire new abilities for existing roles. The Battle Focus you choose for Kerrigan in any given mission and the way you use her powers will have a major impact on how each mission plays out.
Harder, better, faster, stronger: the Swarm never stops evolving, and in Heart of the Swarm, you decide how the zerg develop. Between missions, you'll be able to mutate your different zerg species. If you unlock enough mutations for a species, you can evolve that species into one of two different strains. For example, one zergling strain might evolve the ability to hatch more zerglings from the same egg, while the other could produce zerglings that can make short leaps forward to close into melee distance more quickly.

"Dissapointments like this will cause me to wait for the wait for the SC battlechest to come down to 10$ several years after it's released."
You must be pretty delusional. Have a look at the Diablo series battlechest's cost.
"I suspect an even greater diaspointment lies just around the corner with the release of DIII."
And you base this on...? You haven't even given one suggestion as to what could be changed/improved/removed/added to Starcraft 2, but have the balls to decidedly state that SC2 sucks, and feel that D3 is going to be just as bad.
Typical.
"If blizzard does not blow doors off with DIII I will likly never buy another blizzard product..."
lol. Just lo- nevermind.
"They will either have to pay me to play it, make it free..."
EL OH E-
Oh wait, been there already.
"...I can't wait for GuildWars2."
Then you have a solution. No need to play anymore Blizzard games.
Since I've managed to do only as much as what you've put in, I'd say I'm able to compare my experiences to yours.
I've completed all 29 campaign missions on Hardmode (except for the very last one, on Normal). It might look like I haven't because I did all that on my brother's account before I bought my own (multiplayer reasons).
Ironically though, I never played multiplayer at all due to stupidly purchasing the US version when I'm situated in Australia. I had about 1s - 1.2s worth of lag.
I actually think the campaign is quite nicely done. Short-ish, but still nice and fun.
The pace was fast, never a slow point that made me yawn during the playthrough.
However, the tech upgrades system is what peaked my interest. That added a nice amount of change to the typical campaigns from older games that I'm used to.
And since you want to implement the typical childish mentality of "I'm right, you're wrong", I'm gonna do it here.
A lot of us seem to like SC2 a lot, and I liked the campaign a lot, myself.
So you're wrong. Gtfo.
Yeah hopefully there's co-op in Heart of the Swarms.
Curiously enough, my brother and I were playing Army of 2 just a mere few days ago, when he mentioned that there should be more FPS/TPS games with a proper co-op design implemented into the game.
I feel the same way about RTS campaigns.