Is my room doomed? Pic

I agree with Onhwy61. What is the angle between the speakers and the listening position?

The speakers currently are 3m apart tweeter to tweeter, 1.5m from the back wall (tweeter to wall).

I have tried pulling out the speakers almost to the middle of the room (about 2.5m out from the backwall of a 5.5m length shortwall), as well as pushing it almost all the way to the wall. The room just kinda sounds dead and muffled. On a scale of 1-10 if the dealer's showroom is a 10, mine is about a 5. The fullness, depth, detail/transparency is just not there. I have also tried covering up the big TV in the middle of the wall with a thick towel but that only muffled the center image a bit.

I keep suspecting it's the lack of sidewalls, and that everything in my room is a softer material (wooden floors, backwall/ceiling is made of wood which is kind of hollow when I knock on it).

Both digital and analogue have the same problems.

The picture could be misleading, but your speakers seem very wide apart.

Yeah I will add a rug but I don't think it will affect the sound by a lot. I had a big thick rug before but it sucked out a bit too much low end.

http://farm5.static.flickr.com/4049/4525445010_d045b8812d_b.jpg

It would benefit from a nice Oriental rug.