And, I'd think fixing the committee is worse, as it presents a static point of attack from adversarial POV. If you want any amount of decentralization, handling churn seems essential.
No, I was thinking about Devcon, but I don't want to travel half way across the world ;)
> And, I'd think fixing the committee is worse, as it presents a static point of attack from adversarial POV. If you want any amount of decentralization, handling churn seems essential.
Interesting; I have often had the opposite sense: that involving a larger cohort of nodes generally increases the risk of collusion.
Of course, the consequences of collusion with Ursula are quite a lot less (she can refuse to revoke, but cannot recover the secret). This comes at a cost of needing to know Bob's public key prior to access being granted. It's really a very different formula.
We have often pondered (sometimes out loud) about adding some variety of Shamir's Character after Ursula hits mainnet.