I think a little scarcity on Hive when it comes to reblogging could mean an increase in quality of what's actually reblogged and an increase in vote value for them as they'll have a greater chance of being seen rather than ignored.

I agree with this, usually, I don't look at reblogs unless the title is of my interest. And as you said, limiting the number of reblogs would definitely help. I don't reblog, unless I think, it would be a good one for others.