I hope not. I think the current system is fair. Audax isn't the only long-distance riding any more, and those of us whose annual riding calendar would normally feature ultra-racing or bikepacking brevets currently only have to find one weekend for a long BRM during the preceding year. It's pretty easy to do that (and I know in 2022 to make that a 1000km if I want a free choice of start waves). The qualifying SR series may only be four weekends but, because one is in Jan/Feb, one in Mar/Apr, one in Apr/May, and one in May/Jun, it makes it very difficult to fit in when you consider an ultra or long brevet might take you out for three weeks or more. This year I'm mostly forsaking the sort of event I would normally do in order to concentrate on the SR and PBP. If I had to take two years out I probably wouldn't.
Whether you think two successive SR years would be a good or bad thing depends, I suppose then, on whether you think PBP should really be just for audaxers or whether you think it should welcome all types of long distance cyclist. I can see there could be arguments either way. As it is, I feel welcomed.
That's the thing, time commitment. A 600, you can do in a weekend. A 1000 requires effectively 4 days. Plus recovery time.
If the requirements to get into PBP get any harder, it's gonna mess up the calendar in more than just the PBP year. If you're aiming for a RRtY, there is a shortage of 200's in April, through June, as everything is targeted at PBP. I can see 2022 having multiple 1000km BRMs on the calendar, which will take the place of the shorter rides.
The only redeaming feature of this is that in 2022 more events will be done as BRM rather than BR.
J