Nothing "sucks" about it. It's a tried and proven method of control. The wire needs to be as short as possible, well attached to the rod, and the elevator servo needs to be mounted on the exact centerline with the rudder. Adjust each pushrod until there is no slop. I've used this method on a giant Stinger with 4-40 hardware and arrowshaft rods, and on my Fokker Dr.1 with 2-56 hardware and Golden Rods. I've also used single rods like this for over 20 years in various planes. I've never had a linkage failure.

Dr.1