I understand what you mean, Mark, and I am sure there are compromises.
For example, since one of my key aims is to provide a series of articles for Guild Companion, the dual-statting can take place there. With the final product, if accepted by ICE (I plan on submitting it for publication, once I have the bulk of the material written) then HARP stats, for example, could be bundled into a PDF supplement, similarly to the RMSS/RMFRP conversion for the Rome supplement. Likewise with RMC perhaps, extending the utility of the product.
As I said, baby steps.