That was my point. You can't separate a self vote from voting for others.
Let's say you are voting for yourself now, from @cicbar. If what you're suggesting was implemented, you'd simply move all your SP to @cicbar1, and continue as you were. The system wouldn't see that as a self-vote, though it really is one. There are people here who have hundreds of accounts.
Understand, but delegating SP need 7 days to undelegate so it’s not super easy to move SP. Though separated voting power is far for perfect we can agree that it would be better than what we have now...
And if you hold your SP in parts on many different accounts you basically don’t get anything meaningful besides stupid comments and few votes on your own posts.