Mapleshade makes a stand like you describe - called the "Bedrock". The low stance increases the bass response, but the speaker is suspended off the platform by brass fitting and a large cone in front so the mids and treble are less muddied than if you just placed them on a slab of wood.
I owned a pair several years ago and thought they were quite good with what I had at the time. Remember, the results of any changes in the speaker/room interface are highly unique to that particular room. What sounded like mud in one room might be fantastic in yours.
I would say this - if you feel your speakers sound thin and your domestic environment will tolerate low to the ground placement, Mapleshade gives you a 30-day money back on their stuff, so it's definitely worth trying.
