This is said after having beaten the mod for the first time and getting to investigate the prototype of Arrival.
It is a fascinating mod. And the concept is quite interesting. Execution as well.
While my "bootstrap" Factory and science production was likely below what was intended (only using very few furnaces and assemblers) i had automated most machines and droppods successfully,
The heat management system was quite fun. although a issue with the radiators was discovered in that because they use Offshore pump logic for placement it is possible to build space platform scaffolding OVER where the radiator is and completely "encase" a radiator in your platform with zero consequences.
Otherwise. i am excited to see what you add on. I assume some of it will involve adding a proper mining drill to extract "ice" from arrivals and acquisition of oxygen. water. and hydrocarbons.
I wonder if it will eventually involve creating our own race of biters, and extraction of advanced resources from space? like how nullius did it.
Although i suspect you wont try to follow it too closely.