Hey, its my first comment on Hacker News.

This won't help in terms of clarity of how good the transistor is. As others mentioned, there are different kinds of transistors and different manufactures would still use their smallest (read not necessarily the fastest/strongest/mostly used) to market their process.

A major reason I think this won't work is that transistor size no-longer limits the density of the chip. Nodes below 20nm have transistor contacts (what connects the silicon to metal), and metal tracks that are much larger than the transistor. The contacts typically limit the pitch between transistors and hence the density. A lot of innovation is now done to shrink those elements rather than work on the transistor physics/materials/size directly.