Interesting, nice tracking! So far it seems like it’s just some “sorting.” After all, the power could have been delegated direct from the main account but was instead powered up into @misterdelegation for that purpose.
It’s absolutely a positive that it’s being used to support those well received communities. Steemit Inc. has always maintained their intent to gradually divest their holdings and we could be seeing the start. Additionally, once the velocity hardfork is complete, they should no longer require Steempower for the purpose of delegating to newly created accounts.