[Nursie]

>> I think this is a strange way of looking at things. What non-trivial protocol doesn't have known design limitations?

It's still a weakness, not a feature, and when a blockchain is not a monetary thing the pressures and incentives to run infrastructure will be different, it's hard to say that a 50% attack won't be possible or desirable in that circumstance.

>> Moreover, what could you possibly hope for in addition to a self-mitigating limitation, i.e: a theoretical limit that doesn't matter in practice?

It's not theoretical though, pools have got there with BTC. There are incentives not to obviously mess with the currency at that point but perhaps subtle ways to operate to your own benefit could happen at that point.