That does seem like a great idea.
I would add that stainless steel bolts, nuts and washers should be used to fight corrosion. The nuts should be tightened as much as possible to make a gas-tight connection with the radial wires.
An important point was made in one reply in the linked thread:
" Why waste your time with bogus crap like that? Use a simple ring around the base of the vertical, made of solid 4 ga. or larger solid copper, and braze your radials to the ring using silver alloy brazing rods available at any plumbing supply shop, heating with a Mapp Gas torch (propane or butane will not get the copper hot enough). The copper will soak up the molten silver solder just like a sponge soaks up water, with NO ADDITIONAL FLUX NEEDED. 20 years later in direct contact with the soil, the brazed connections will be as solid as the day you soldered them.
Never use tin/lead solder to bond radials. Within a few weeks, the minerals in the soil will turn the solder into a white powder and the connections will literally fall apart. "
This concept is also discussed in depth in an article on ground systems in the latest issue of Popular Communications magazine. The article also calls for brazing with a Mapp gas torch instead of soldering or using screw lugs. Apparently, brazing is used in professional broadcast station ground installations.
Is used in commercial installations. The base of the antenna at WDCF in Dade City has copper flashing coming down to the radial system. At that point, about 60 radials made of 4 inch wide copper is brazed and rolled out.