OK, I like a lowered bike as much as anybody. So I'm with you so far. But why take the crude way? You obviously have skills, why not engineer a couple inches of suspension travel into that frame with a hidden monoshock setup? You could make a slammed frame that is very clean and only looks hardtail.
Those "dead shocks" are crippling your bike. A crippled bike is a dangerous bike. Rear wheel travel is critical to safe handling; it keeps your tires in contact with the road, and keeps your bike stable on rough pavement.
There are a lot of hardtail/slammed "custom" riders in my area, and I can't believe any of them are still alive. I've seen some of them nearly crash due to small potholes. I've seen them practically stopping traffic to turn into the Burger King, because they can barely turn while going over a 2" lip at the curb. They ride poorly (due to fatigue, useless rearview mirrors, awkward riding position). They often have very high performance motors in poor-handling chassis, always a dangerous combination. Worst of all, they always blast full throttle on the straights, since that's the only thing their bikes can do.