I like this feature. I like this feature a lot. I see the clear intent to expand progression and streamline it without adding MK2 and MK3 versions of everything. I also like that the quality feature is optional.

If I may, I'd like to suggest two more achievement ideas:
1, Complete the game without ...

Thanks, I'll check those out!

Edit: actually, https://mods.factorio.com/mod/RepeatingIslands seems to be exactly what I'm looking for!

There is an "Island" map type in the game. As I understand it, it generates a single large island in an endless ocean.

I suggest adding a similar "Islands" map type that would generate an infinite number of such islands in an endless ocean.
Bonus points for:
Configurable size of islands and the ...