- I don't think the exact numbers really matter to be honest. For example, we know for a fact that the eat me is rarer than the drink me because it turned omgsr a month prior yet people value the drink me a whole non more. We know that the jeweled and non jeweled liontails are so much more rare than the green liontail that they turned omgsr a year prior, yet everyone values them the same, I don't because rarity matters the most to me.
What we're really just getting at here is general demand, and I don't think we should at all conflate demand with their own rarity tags. That's doing a little bit too much although I will agree that people generally prefer having 1 rare to 2 uncommon. At the end of the day, demand is king. And that is essentially saying that something is only worth what people are willing to pay for it. Fair is whatever the community dictates and ultimately that just comes down to people liking certain species (dogs) more and certain dogs with certain designs being massively more popular than others regardless of the difference in rarities (ex: joker dogs and black advents going for lump sums more than their rarity swaps would or UR b wolf's/fruits struggling to fetch a non back in the day when they were at-least twice as rare)
Case in point, the punk dogs are currently going for "0.5 nons." The raven dog from the same year is going for 6 nons or 12x the value of one punk dog. The raven dog is still not even OMGSR while all of the punk dogs are. All of the 2010 store pets, except the raven, are OMGSR, yet good luck doing a 1:1 trade with any of them except the red cerb. From that same year, another example, people value the brown sleipnir the same as the liontails despite the liontails going omgsr THREE YEARS prior to when the sleipnir did meaning the liontails are much, much rarer. I do wonder if there was a super duper omgsr tag that people would value them differently.
Some quick thoughts. I think trying to break it down too much will overcomplicate things and ultimately no one is going to stick to it because at the end of the day shiny dog > whatever rarity math you've come up with.
I think it would be better to gather the opinions of as many active traders and just users in general over a long period of time on large polls as we've been doing. How do they treat rare for uncommon etc gaps? Do they care about the date of the pets or just rarity? Bulk is great, but there's no amount of uncommons I would trade for a very rare, but for a rare we can talk. I personally don't care about dates, especially for non-omgsr pets because we refined the system so much. But I also understand that more people do than don't, and so therefor I'm lessening my gains by trading a 2013 rare for a 2016 rare even though I think people should value them the same assuming all else equal, because I could probably get more bang for my buck.
But everyone differs on this in little ways, so instead of trying to create a set system for people, its probably better to just educate traders on the general opinion and trends and let them form their own guidelines.