Proof of Distributed Computing (PoDC) stake requirements
When Proof of Distributed Computing (PoDC) v1.0 was retired, the stake required for BBP was at a ratio of 20 BBP to 1 RAC. Now with PoDC 2.0, the stake requirement has changed to ^1.3 BBP per 1 RAC.
Which is better?
Each approach has their pros and cons. The exponential stake requirement can introduce splitting CPIDs which allows rewarding BBP for BOINC work units with fewer BBP staked.
With a fixed BBP stake of 20:1, there was no incentive to split CPIDs.
You can see below with ^1.3 stake requirement, you need less BBP on the low end. This can encourage greater participation compared to the fixed stake requirement of 20 BBP. Around 21.8k RAC is when 20 BBP ends up requiring less. So, the old scheme would have benefited the high RAC whales and pool. The new scheme encourages participation from a diverse pool of individual PoDC miners. In the current scheme, if someone with a high RAC wants to maintain one CPID, they would have to pay a premium to do so.
Of course, since you can always split CPID if you do not care about world rankings for WCG, it may be difficult to discern whether a CPID is actually a unique individual or one person with 10 different CPIDs.