i guess you never browsed the official SC2 forums. i used to frequent them every day. trust me, this game was met with a TON of criticism several months after its release. also, although it sold well (like I said and what many believe: it rode on the success of its previous titles), the rate of its sales after the first couple months has not met blizzard's expectations. hence why the game's price was slashed, and the collector's edition, greatly slashed. many also believe that Blizzard is getting into the Dota SC2 project because they are alarmed at how interest has tapered for the game. If you don't know, for WC3, Dota (arguably the most popular UMS map in the world for any game within a game) kept the game up. It's not far fetched to say that WC3 is absolutely nothing without Dota. Just look at the custom UMS maps.. what do you see? Dota pretty much all the way down. Blizzard knows the popularity of Dota and what it can do. Which is why they are trying to tap interest back with their own Dota version in the SC2 engine (good luck--they got competition from Valve coming with a standalone Dota game). read between the lines, don't think that one number is the end all.