By December 11th we should be headed into the run already, so yes, they probably don't need to rush the HF. There are lots of things that needs fixing and I hope they get it spot on.
As for vibes, well they have to just be innovative about their ideas to truly accomplish anything
I think postponing the HF was a good idea, under the circumstances. It is a way to drive some attention to the blockchain, and that works best during the bull run.
Well, at least they started to tweak Vibes a bit. I didn't like how it was created at first, when the rewards were disproportionate to the benefits.