So I'm a bit perplexed why my burn rewards got reduced by 90%.
That's the impression I got too, that mint-by-proof-of-stake rewards effectively replace mint-by-proof-of-burn rewards. But I haven't even tried to reference that perception against the reality of the C++ code.
It would helpful if there was an option to "turn off staking" on a wallet you want to use exclusively for burning.
Either
-reservebalance=1000000000 as a command line option or
reservebalance=1000000000 in the config file will effectively suspend staking (at least until the wallet's balance exceeds the amount specified). If you try that approach, I'd appreciate knowing whether the mint-by-proof-of-burn rewards resume their previous frequency and amount.
But a password-locked client allows mint-by-proof-of-burn whilst inhibiting mint-by-proof-of-stake. Useful to know.
Cheers
Graham