What do think about adding a new formula for the base-rate to this proposal to achieve both goals? I have no time atm to make a full model, but a first suggestion (merely a starting point) would be something like this:
where
m is your multiplier for alch issuance
m_min is the minimum multiplier
f_r is the reduction factor
Depending on the values you choose for m_min and f_r, you can make sure you get the immediate overall reduction in issuance that you’re looking for, while also providing a higher incentive (because of the square instead of the square root) to channel high Kinship Gotchi. If someone were to channel their high Kinship Gotchi (i.e. sacrifices their spot on the Kinship leaderboard), they’d be rewarded with a much higher amount of alch. This would have at least the chance to shake up the Kinship leaderboard while providing a minimum reduction in issuance (with a high f_r (e.g. > 300) and a low m_min (e.g. < 0.5)).