Thanks for your response and the Resteem.
I think you should phase it out on any SBI comments and sbi2~10 posts as you mentioned, but leave it for the main.
However, I think for the main account's posts it should be left at 2:1 ie 10cent vote = 5cents towards the balance. The voters get back a little more from curation anyway.
I remember reading a post from @holger80 awhile ago about how he set up his auto vote program to vote for SBI's accounts whenever his VP reaches 100% to prevent it from going to waste. So I still see a purpose for this and it will give people a chance to get out 1 a day.
It would definitely prevent abuse, but still give people somewhat of a reason to vote for you.