I think neither SMD nor the Chems need visuals. In fact, I was a bit dismayed that the visuals took over the show on the Chems' last tour--don't get me wrong, they're amazing--and wished, even, that they were scaled back a bit.
I was actually impressed that the small bit of lighting that SMD had was used really, really well. And I am in agreement that they fucking SLAY the audience with the drops in their set and the ferocity of their sound. It reminds me of the Chems back in the mid-90s. ;-)
As far as SMD getting the respect they deserve, I'm actually surprised that not more people are into them. On their MySpaz page their quote states that they're releasing another album this year. They definitely have the potential to further push themselves into the spotlight if they make an amazing follow-up to Attack Decay Sustain Release.