Canon is not likely to come out with a line of APS-C glass for the R's.Still waiting for a R6 with APS-C sensor. I want a high end hybrid body with the specs of a R6 and willing to pay like 2k for it. Don't have the budget as a hobbyist to upgrade to a R6 and all the expensive FF glass that comes with it. I would need to replace my Canon 10 18, sigma 18-35mm and 60mm macro with ff equivalent glass. The FF benefits are not worth it to me with all the costs involved. I am perfectly happy with Aps-C but I need better specs especially for video work. 4k 60p 10 bit, 1080 120p all with dpaf no crop and IBIS.
So yes IMO please offer a R Aps-C body. The m series is not doing it for me ergonomics wise.
I assume you just want an R with the equivalent pixel density of your APS-C canon's without upgrading to full frame so you can use your EF glass on the R's?