Well I don't see any place to ruminate on this season as a whole, so here we are.
I loved this season to death. The laughs just kept coming with every episode. Sam and Max Vs. Elder Gods and deranged pharoahs and Alien invaders seems very much in-keeping with the spirit of Sam and Max, even more than the previous two seasons.
For some reason, I had a hard time connecting this season with the previous two, though. Even though it obviously falls in the same continuity, it just doesn't flow from Season 2 the same way Season 2 did from Season 1. Maybe it's the lack of a regular office where the mementos from previous adventures are kept, maybe it's the lack of Bosco and (For most of the season) Sybil.
The changes were good, though, and opened up the door for much, much deeper storytelling. The willingness to break the mold brought about more risks, and I think all the risks payed off.
Max's powers were a fun addition. Rather than introducing new items in your inventory, they introduced new play mechanics, which was more satisfying (But it was at the sacrifice of inventory-based puzzles, which were kept to a minimum this season. This is still an adventure game series, and I still want lots of items.) I get the sense that they were maybe a bit too ambitious, though, as Max's powers seem to have unleashed the first stream of actual significant bugs I've seen in a Telltale game. Alternate Max didn't have powers, though, so it looks like we'll see a return to the norm in Season 4 (And there'd better be a season 4! I wanna see the baby!)
Above all, though, I loved Season 3. I've never had more moments playing a Telltale game where I just had to grin and think, "This is SO COOL!"