The complete opposite. You DO want to do something similar to what I did. I would highly highly highly recommend filling all the corners at the top of your room as a starting point. My room isn't huge either. I mean, you aren't doing gynastics or kung fu practice in there, so you should be fine at the very least filling your top corners. Now, the reason I did panels versus filling the entire corner is a bang for the buck reason. You will get more low end extension, but the 4" thick panels alone will take care of 90% of the problem. The rest is gravy.
I am taking over another room in the house for mixing (Old lady ran off with some douche in Italy so I have the whole house to myself) and I am going to use the superchunk ( see here:
http://forum.studiotips.com/viewtopic.php?t=535
) method in that room to really knock down the bass.