I disagree with you, it's currently already playable, you just have to learn the map (it's the same for beginners to CS, it's hard to learn maps like nuke or inferno at the beginning).
[Blocked Image: http://img99.xooimage.com/files/3/3/b/2013-06-03_00001-3eaec16.png]
Red arrows are T paths
Blue points are CT example
Dust2 :
[Blocked Image: http://img97.xooimage.com/files/4/6/5/2ek36ep-3eaec18.png]
I don't think it's time for changes like the T spawn size and I think it's useless anyway. When you know the map, you know where you have to go and it's a great thing that you can get cover if you want to keep your weapon, no matters how many covers there are.