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Yeah, if anyone knows when/how the fossils are obtained, I'd love to know. It's a huge wild card right now. Dex position doesn't seem like an end-all-be-all but it's certainly an indicator.
My plan is:
* Dubwool
* Centiskorch
* Galarian Rapidash
* Arctovish
I don't really like any of the starter designs, so I plan to pick Scorbunny and replace it with Sizzlipede as soon as I can, which is on Route 3. There is, however, a nonzero chance that I get attached to the starter anyway and...
Leakerman has played through to the end of the postgame, though. If the starters had G-Max forms, you can bet he'd have seen them. Stuff like that for starters is always heavily emphasized in the main story.
Type: Null is a gift mon in the Battle Tower in the postgame, I believe for getting some winning streak in the tower? Stats and possible changes unknown.
Yeah, on this note—one of the leakers said Dreepy is catchable in the Wild Area after Gym 3. How much of the Dex is really catchable in the Wild Area vs being obtained in Dex order in other locations?