If you want to take the cynical view, any cards that went on the MWL or were otherwise nerfed in less than six months, would be tantamount to the designers saying “we got this card horribly wrong and need to fix it now, we didn’t do a very good job”, so that’s unlikely to happen.
A more positive view is that as with anything added to a game, there’s a certain settling in period needed, to see if the game self-regulates. A pause between Regionals and the next big events to say “what did thinks look like in the competitive environment?” and take stock is entirely sensible. I’m sure there are cards like Faust or Museum that may well end up on the list, but it makes sense to have a few weeks of a highly competitive tournament environment to shake out if and what needs to be done to change things for the future.
Scanning down Store Champ results we see a metric funk tonne of Anarch IDs, so that would indicate something could be done there, on the Corp side it’s a little more diverse, but there are still clear winners in familiar NEH territory. That could lead to more yellow restrictions - but remember that most FFG word on the matter is they’d rather nudge things a little bit and see what happens than make bigger changes all at once.