I understand what you say 100%. We should educate newbies on the arts of networking and sharing!
Now let me add an improvement to your idea: Make the Self-voting Power (SVP) usable for others as well, while keeping Collaborative-voting Power (CVP) usable for such purpose only.
The risk of creating multiple accounts is not big. Because people will have to spread SP among all their accounts, and coordinating such operation is complicated.
Regarding SPAMMERS and abusers, we should improve bandwidth control a lot more! But that is part of a another discussion...
I like your idea :-) with more sharing Steemit would be better.