I just found out that the monthly budget decreases every time by exactly 1.5%:
getsuperblockbudget 24600
5789219.786313
getsuperblockbudget 30750
5702381.489514
getsuperblockbudget 36900
5616845.767143
getsuperblockbudget 43050
5532593.08065
...
This is an excellent deflationary feature, I like it.
@Rob: I noticed that on the Proposals list page there is a fixed amount from the previous budget, so I guess it should be a dynamic value.
I was thinking: because we have 150 blocks/day, instead of 205, our monthly budget is actually every 41 days (6150 / 150) instead of every 30 days (6150 / 205) like it was meant to be. Since the block time issue seems to be non-trivial, maybe we could consider lowering the interval between superblocks from 6150 to 4500? (4500 / 150 = 30)
On the positive side of things, in the current situation where both exchanges are down, it's good that we still have about 33 days left until the next superblock, because right now it's difficult to determine BBP price for making proposals.