I think we should come up with better mining rules that are not complicated like signet and not as vulnerable like testnet3.
True. The big question is: what should be the new consensus rules of testnet4?
While new systems to these might be better than previous, there isn’t any certainty that they wouldn’t come with some vulnerabilities of their own.
Wouldn’t the more probable thing to do would be to improve on the existing system as per an improved version to it without coming up with an entirely different system all together?
I suppose the reasons for attacks and some of the hacking is often about discovering vulnerabilities or loopholes within a system and have it fixed. Rather than having to continue the same circle over and over again on new models or systems to these networks.