I don't know if the following is technically possible. But if it is I would really recommend FD consider it or run the risk of ruining the reputation of ED.
On Tuesday make an update which includes the technical improvements in the beta. The improved shaders, the stuff that stops much of the micro-stutters, the brilliantly improved sound and other very welcome bug fixes. You could also consider adding the two new ships and the new mining/drone system.
Delay all balance changes, the mission system changes and Powerplay itself
Mostly agree. the mission system has improved though - it's not good yet, but better than the current one (hell - no mission system at all would be better than 1.2s).
PP as a feature shouldn't be released in ist current state.
I'm really sorry to say that the current iteration is a nightmare come true.