Could Britain have chosen two G3s instead of Nelson and Rodney?

If treaty terms had allowed every major navy two 41,000-ton ships, would the Royal Navy have preferred two G3s to HMS Nelson and HMS Rodney?

Probably. Britain would likely have selected two G3s, with a gun-calibre adjustment if treaty compliance required it.

A two-ship G3 outcome appears plausible if the tonnage rules had permitted it. The design might have needed its gun calibre reduced to 16 inches under the hypothetical settlement. This brief answer does not establish a complete alternative building programme.