The first session of Judd vs Williams was a joke for any soft shot, but it was the same for both of them and Williams has moved away from the softer pots (5 years ago it would have been unplayable for him). Williams definitely let the pressure get to him, as you say with rushing at key points. He's my favourite player by a mile and possibly my favourite sportsman of all time (total maverick plus grafter = my kind of guy), but I like how Judd conducts himself and the sport needs these older guys to seriously challenged.
The tournament has been great in terms of lesser known players. Page, Donaldson, Uhn-nooh, Brecel, Vafei, Saengkhak all look handy. Lizowski and Bingtao finally seemed to have learnt how to turn up at Worlds and should he reaching semis of majors regularly.
I think Judd has a chance in the final if he stays fresh. His safety is pretty solid and his long potting will be better than Ronnie's. But yeah, Ronnie is cruising and fresh, so likely the biggest challenge for him will be if he gets nervous about equalling Hendry with 7.