That has been tried. Lots of messages promising support, but not that many following through.

@steemchiller - I like the subscription idea, but I would tie it to the SP of the subscriber, something like this:

0 to 100 - no fee
101 to 500 fee of 0.25 SBD per month
501 to 1000 fee of 0.50 SBD p.m
1001 to 2000 fee of 1 SBD p.m
and so on

Why? Because even with an SP of 1000, all I have as voting power is 0.01c Steem. Makes it hard to earn enough to pay more.

PS: When earnings are set as to be made to a beneficiary, is there a way for us to see it is so?