If that was the case, Valve should've hired the Natural Selection team instead.

I personally think its going to be something pretty radical.

I don't mean to rain on your parade, but that's severely false.
The CS team was hired and they went on to continue updating CS (Yes to this very day) and made an actual retail version out of it (Counter-strike: Source).
Ditto for the Day of Defeat and Team Fortress teams.
Even the Narbacular Drop team was hired to expand on that game's concept.

Make no mistake, Icefrog was definitely hired for his influence on Dota and we'll most certainly see something along those lines being produced. Highly doubtful it'll be RTS-style due to Valve's background, but certainly something along that vein but in FPS form probably.

Bloom is so Unreal Engine 3...

What do you take Valve for? Posers?

Its definitely going to get more MOTION BLUR

Heh, ironically, I believe most of the Dota crowd will shun whatever Icefrog puts out with Valve.

Valve have always had a history of making their multiplayer games as accessible as possible and bridging the divide between new players and seasoned players... Something which Dota (As well as most of its fans) is totally against

No game has been announced at all. Please reevaluate your question.

Again what bloody game are you talking about? The only thing that's been revealed so far is that Icefrog works at Valve and is heading a team.

Actually, since Dota's hero roster is usually based on various fictional characters from other stories, perhaps Valve are gearing up some game where you can have various Valve game characters in it.

Imagine:
Gordon Freeman
- Laser guided RPG
- Can pilot vehicles
- No voice chat

Bill
- Unlimited pistol ammo
- Ability to point
- Dynamic smoking

Chell
- No combat abilities
- No fall damage
- WCC pet

Counter-terrorist
- $$$
- Armour
- Bunny hop

Entire Team Fortress roster
- Hats
- Hats
- Hats

Huh? Source please (Hehe, pun totally unintended)?

I wasn't aware that he is with Valve now and a quick google search yields nothing.

Also, what other "casual" game developer have they hired? And what "casual" game have they released anyway? (Audiosurf isn't even a Valve release)

Oh yeah, I know perfectly well that's Valve's strategy (Team Fortress 2, Alien Swarm, Portal, Counter-strike, etc) were all the results from hiring modders... I was just wondering how he came to the conclusion that these ppl end up making "casual" games.