You didn't answer the question, so 1.75m is the absolute minimum? Is 1m\hr not acceptable? Where is the line? 1.75 is the meta because it's the peak, but you don't have to be a meta slave. There's multiple options to make 800ish. I cycled through a bunch to experiment, even repeated some of the championship series to calculate the series bonus.
Eventually I favor max efficiency because I'll have more fun getting into the GR3s I line that I love, so I default back to Fisherman's Ranch.
It's an odd paradox, where they screwed up Online lobbies so bad, that I don't mind grinding the offline races right now. So their screw up ended up benefiting my outlook on the game, which is ironic, but sobeit.
For a solution, if I'm being realistic... 1.75m an hour is too high. I would like to see all end-game events have a $ per mile or minutes ratio that reflected 1m an hour. I think they should alter payouts for PP, so that we could get creative with our challenges, by handicapping ourselves for an award bonus.
Custom races should pay equal to that same $ ratio. Drift trials should have payouts. Online racing should have payouts(I think this is a bug).
I don't think money is currently a problem, so I think the vast majority of complaints are being framed poorly. I think we have a lack of events that payout what would be realistic, combined with 1 event that pays too high, and meta slaves being victim to human nature and "gotta have it now" mentality.
If fisherman's ranch was nerfed to 1m an hour, I'd be fine with it, as long as theynlet us do custom races at any track for any class, that paid equal. And again, a scaling factor for PP deficiency would be cool to incentivize a challenge.