Here are just some thoughts on the HF20 rollout..
Who of the Top20 Witnesses did a code review?
Who did some testing?
Could we see your testing protocols?
What are your methods?
How do you start code review?
What are your steps?
Do you follow any rules, guidelines?
What are your lessons learned from this rollout?
Do you think it went well?
Why?
Why not?
Did you do enough to avoid the horrible user experience that happened?
What could you have done better?
What could be improvements in your testing to avoid such mistakes and errors in the future?
How was the line of communication?
What could be improved here?
Why did no one detect such a fundamental error in the testnet?
What are ways to improve the testnet?
Where does the dev team lack experience?
(that is a tough one)
How can in the future improvements implemented so such errors will not occur?
What will be the timeline for the next HF (HF21)?
If none given, why do you think, we don't need a timeline?
Should there be more or less testing?
How long before the next HF should freeze pahse and testing begin?
How many RC (Release Candidates) would be necessary before going into prod?
I am sure, some of you have experience in testing.
Can/would you help?
What are further questions you want to be answered?
and now back into the abyss, because soon the applauding of T20 and STINC will start, how well everything went for HF20