Nope, no, and not yet. I've tried that myself, the clients just ignore it all.
Is there no chance to try any better? We only need to slow down chain growth. The individual khps may stay the same.
A lot of us have already attempted everything you've listed here. That's why we have a lot of security updates for releases
Will you, a lot of us, share your experience, especially the results and conclusions?
Good analysis with an experiment may be published as a scientific research paper, are you interested?
About the only thing that will make any of that work is having more CPU power than the entire swarm and the currently difficulty. Reverse time chains, slow DoS, fast DoS, swarm manipulation, wormholes, and time travel have all been tried so far. But if you come up with some unique, we'll be glad to try it.
As soon, as design weaknesses (as opposed to implementation vulnerabilities) discussion will get it's section on some
public forum and become more concentrated and accessible to the public, then I'll be happy to present other unique
ideas. I just don't want to hear that again: "Nope, that's not possible, it was already discussed, read forum".
It is boring, believe me. Forum is bloated with repeating ideas. Let's collect them.
I want to see the real analysis, that was already performed. To confirm the results and to not duplicate the effort.
I saw some article on wiki that summarizes frequently proposed weaknesses, that are not weaknesses, but that is not an analysis and not an discussion, there are just statements and it is not too convincing.
And it does not mention a lot of other obvious (non-)weaknesses, that are discussed here.
For example, I propose, that costs of operation of Bitcoin node is by design not affordable to a mediocre Joe with a PC.
Transactions volume (especially the full history) will make it impossible to practically operate it on modest PC hardware.
Not for now. Let's wait for 5 years, or 15. And you will see, that Bitcoin requires server hardware to just operate.
There should be a way to estimate the space required to store the Bitcoin node on disk and the time required to process
all that stored data (to verify every incoming transaction).
And my estimates say, that the global transaction rate will be limited by the system.
Let's document why I am not right here. And nobody should bother and everybody can safely buy into Bitcoin. OK?