Bit more about CA's way of handling the games:
ConcernedApe's Haunted Chocolatier
And i hope there'll be more optimizations for modders and official updates, so that mod and bug fix etc progress will be easier to handle in general.
Since it's a whole new version, maybe some smaller things like regular (so not too important) areas, and i always like forageables and crops and fish, maybe with some machines, but i use mods which add plenty machines... more areas to do whatever in is always good (PiF mods are awesome), a few new areas to choose from, where one could build their own farmhouse, and live there, too!
Maybe some variants of the skills, like choosing the Tapper profession to either do what it does(tapper products selling for more), or boosting the speed of tappers and/or heavy tappers, or giving both after some quests.
The current tapper profession isn't that good, but other ones which are good, like botanist, get a lesser extra effect.
Tracker's one that's barely used, too... maybe also tracking one's own farm animals, artifact spots, panning spots and fishing bubbles(the spots where many fish will bite), and maybe also trashcans which contain something.
Even though i use mods for these things, i still think this would help non-mod players, and those not using these particular mods.
I'd also like some randomization in the mines, like new floors with new materials(useable for new items, or to get the regular material bars with, by putting them in the furnace together), or new versions like mixed floors that could have any non-radioactive ore(Skull Cavern having those, too, i guess) and such.
New mines?! Nothing special, just another place to mine and collect materials, gems, artifacts etc.