do you see any points in that list that could be construed as legally binding? Other than block size limit won't be > 4MB when/if it happens?
I don't think any legally binding agreement is likely or even possible.
What we can do is work on things with broad industry buy in and can self enforce them.
For example -- if we agree to a code of conduct that agrees to not trash other tech opinions in the press and some a does....that violator can expect a call from half a dozen other participants saying "whoa, hold on, that's not what we agreed on" .... repeated and willful violations could result in many members of the industry working to reduce the influence of the violator