With the Jika, you run a much lower risk of losing the weight, and it's just one self contained item to tie on, like a jig, no threading the tag, no attaching the weight, no wires, no fuss. To be clear, I don't consider the Jika or the Tokyo rig even kissing cousins to a drop shot. The function and bait delivery is closer to a Texas Rig - put the bait in the weeds where the fish are without bringing back a clump of weeds. It's all just a device to penetrate weed cover, all the other positive and negatives are side effects of the rig. Every rig is a compromise of some sort.
In all three rigs, the bait swings freely from the weight, so that debate is moot.
Yes, you did say that the purpose of the wire was to aid in punching. How is wire better?
You say that having the bait a few inches off the bottom makes a difference. That's also a fair and valid point. How is wire better?
Those are the questions I wanted answers to.
I've looked at this rig, and dismissed at as totally unnecessary, but if there's a compelling reason, I'll try it.