The problem is imo not the binding itself but the ratio. Currently 44 users have ~75% of the voting power while the rest of the roughly 40k active users share 15% as you can see in the charts of this artcile. This ratio is improving, I looked it up in older articles of the same user, but it's still completely tilted.
If I had to design it, I would use the 2nd root to moderate the huge gaps. In this scenario 1000 SP wouldn't have 1000 times as much voting power than 1 SP but only about 32 times as much. I think that would make it more interesting for many users to spend time here.
But of course that's all just theoretical. Maybe it can be built into the version after beta.
Holy shit that article is amazing, thanks for showing!
Your idea isn't bad, either - being difficult to reach the top would make the community healthier.
Have you tried discussing it with the developers?