This isn't as much as a proposal but rather something which actually existed for like almost ten years. These are the PRoC's territorial subdivisions in 1949, and they mostly stayed like this until the late 1950s. Provinces and autonomous regions are in blue, territories in pink, separate municipalities in red. Since there are proposals to divide the bigger Chinese provinces even today, this is something one could easily draw inspiration from. Here is a list with all the data on them, including their abolition dates.
Why is Qamdo territory labelled in Blue though?