I waited a lifetime for this game, it's not what I expected but it's sc nevertheless. Best RTS in the human history.
About the campaign,
I like how blizzard made the translation from sc1 campaign to sc2 campaign, respectively from sc1 secret mission to sc2 secret mission. I like that u can do much on that ship, there are many achievements and of course the missions are great, there is much diversity in them and that has to be appreciated.
Also the storyline is to my liking, however there are people that dislike it because they hate Kerrigan(cause she killed Fenix mostly)-and that too is a reason I don't like her much, but to my opinion the ending is quite beautiful.
So I am eager to see how blizzard will surprise us with HotS which I hope comes out this year.
Also to mention about the game in general.
Blizzard is still working hard on the game to keep the balance. Since I purchased the game last october they made many balance-adjustments and visual details. Also 2 new leagues since then, and just recently they made the -I don't know how they are called- badges to the leagues. So the league has a star if u are in top 8, it has something else if u are 8-25 and so on.
Blizzard has also made 3 custom game types, but the players made tons. And I can say that many of those custom games are quite awesome, with a dota style included.
Finally, I would say the game is worth the wait....but 10 years? The game is awesome, but 10 years? Wish you all well and have fun in sc2.