The CLRC introduces a huge market inefficiency. If the 4000SP is delegated to a large account that can aggregate it with other SP then the 4000SP retains close to its $0.08 vote value, e.g. through circular voting / vote selling etc.
A user with 4000SP will be much better off selling those $0.08 upvotes and using the liquid proceeds for social interaction and engagement. I expect innovations to happen pretty quickly under HF21 to facilitate this approach. But it's untidy and introduces another layer of complexity that Steem really does not need.
I really wonder, with that shitty non-scaling convergent linear reward curve in place, whatt continued justification can there be to maintain the dust level treshold on 0.02 ? Move the bugger to 0.001, or at least move it to 0.006 so the same level of influence needed today to rise above dust level stays intact when HF21 hits. HF21 will screw over smaller accounts and hinder platform growth badly enough without the dust level threshold.
The dust threshold has more to do with added processing costs at the blockchain level than anything else. Every payout is a significantly expensive operation in terms of resources so there is a reasonable cutoff below which the costs are deemed to high to justify.
That's okay. People sending tips or subscribing for premium benefits or boosting each others content or whatever (as well as earning specialized Steem Engine or SMTs tokens via specific projects and communities) does not have the exploitability and other challenges of a common pool. It probably scales better in many ways.