It looks to me like Chimeric Aspect and Final Aspect are swept away with the line "This alters shifter aspect and all of its improvements." I guess the DR/silver is supposed to make up for it? DR 10/silver at 20th isn't bad for a PC, since plenty of monsters don't carry +3 weapons.
I suggest asking in Rules Questions to get more responses, as the "Classes" subforum is part of the Pathfinder 2nd Ed Playtest forums, which is not what you want, and not many people are still here.
Yeah, Ultimate Wilderness had a lot of weaksauce in it. I mean, it's certainly not like the base Shifter class is so great the archetypes have to weaken it.
If it's not the lycanthrope flavor you're after, check out the Adaptive Shifter, I believe it's generally considered to be the best / most usable Shifter archetype.