I am willing to wait but Rivian and the others have lost so much credibility to deliver that I do not even trust a deposit with them.
So I will continue to wait until manufacturers can ship these things as ordered.
If I wanted a dual motor config I'd just have ordered a Ford, which would probably deliver sooner, for less money, and probably better supported in the long run.
So mostly the "drastic" things that have changed are related to motor/battery unknowns.
Adventure pack no longer includes kitchen or tent, etc
They are using BOSCH motors and Samsung batteries. At least until their new dual motor config comes out with their own motors. I'd say this is neither poor or great since these are mostly industry standard options.
Munro has done a very detailed teardown of both the Rivian and the Lightning. The main complaint of the Rivian was that it was overbuilt and they are spending too much money. Otherwise, it's been given very high reviews for quality.
I suppose you could argue that the quad motor config is maybe something other OEMs wouldn't take up for many reasons, but it's not a "Poor" choice. It's resulted in one of the most unique vehicles to ever exist, which was probably a very good brand building strategy. The problem with Rivian now is that they haven't been able to pivot to mass market vehicles quickly enough.
The main issue is both. Communicating constantly is not helpful if you also change everything you say all the time