I do, but your proposal essentially takes two divisions (MA40 and MA50) and breaks it down into three divisions (MR40, MI40 and MA40). I am not sure how this lends itself to larger divisions, or more pointedly, fixes anything. (Again, I don't know what is broken).
I also believe with your proposal, MA40 would be predominately 40-45 y/o, MI40 would likely be populated by the 45-50 y/o and MR40 with the above 50 crowd. Still don't think it fixes any perceived issue, just creates an extra division and provides for a new and different scheme. It does give the MA50 guys, rated 900+, a chance to play with better competition, but they can do that already by playing MA40.
I am not sure we are going to agree, but that is OK. That is what this thread is for, idea discussion. :thmbup: