(Unified Icon Library and Free Range Camera don't require updates and will still work fine with the new game version)

Ofc, there's always a judgement call about how much things will be limited/simplified. But ANY time you hear about a mod "being added to the game", never assume it will be the full mod that you're used to.

Plus the modders have a head-start. A lot of this takes a LOT more time than people think.

There's a difference between a casual user vs. someone who goes out of their way (however trivially) to actively subscribe to (and use) a mod, so any mod "added" to the base game will inevitably be simplified and limited so as to not let players "shoot themselves in the foot".