I did reach out to the NC and asked about the cost of the MBCPB. I was told is does NOT comprise the bulk of the C2019 total ask and while it does have a cost, it does sunset off the company books eventually.
I was also told the NC is well aware that we want QOL improvement and those QOL improvments will remain well after the min balaance goes away.
Lastly the NC highlighted the fact that the MBCBP and the Minimum Balance are two very separate items which in no way require one or the other. They think the confusion lies in that the most tax efficient place to put a minimum balance would be in a MBCBP, but in no way does the Min Balance require a MBCBP and a MBCBP does not at all require a Min Balance. Two separate topics.