Thank you, I'm glad you like it!
The only thing I didn't see were the item sounds. Factorio 2.0 has a bunch of new clangs and clunks as you move items around, so in the item prototype I added:
inventory_move_sound = item_sounds.mechanical_inventory_move,
pick_sound = item_sounds.mechanical_inventory_pickup,
drop_sound = item_sounds.mechanical_inventory_move,
I also noticed something I missed! My new technology icon doesn't look quite like the old one, so I made a better one: https://i.imgur.com/F69n4Ye.png
For the snow sprite, I just made a new layer on top of the entity sprite and started airbrushing in snow. Gaussian blur with a small radius helped to smooth out the snow without making it blurry. I used the clone tool to copy some bits from other snow sprites as well.