Bypassing the Amp gauge - Question about the MAD Electrical method

I am now working on my firewall and all the wiring, dash, etc.
I have read about the MAD method and that has already partially been done to my car by someone else.
Anyways, after looking at the diagram, it seems to me that I could just eliminate one of the wires (the black one) from returning back through the firewall and it would effectively be the same without any additional load, correct?

I just don't understand why we would need to complete that loop if the amp gauge has been eliminated/bypassed.

I have modified the diagram to show what I am proposing. Feel free to correct me if it will have any negative effect.
I just figure the fewer wires I end up with in the engine bay, the better.

Also, where's the best place to by the good quality fuseable links at?

Thanks!

Doug