This is a good candidate to be a reward for new planets, but to fit in better with existing buildings, I'd like to be able to config the following:

• No module count scaling with quality.
• No efficiency scaling with quality.
• Quality affects speed and building HP only.
• Base productivity in the 25% (inner solar system) to 40% (outer solar system) range. (don't want to step on Biochamber).
• Either 4 (inner solar system) or 5 (outer solar system) module slots.

Bonus Idea: Add an east-west fluidbox for recipes that take water. This will allow new layouts.

You would likely need two separate structures for what you are requesting here.

Thanks for the feedback! Here's what has been implemented in v0.5.0:

⚙ Quality affects crafting speed and building HP only. No module count or efficiency scaling with quality.
⚙ Module slots are now a free integer field (0 to 8), so you can set exactly 4 or 5.
⚙ Base productivity is now a free integer field (0% to 200%), so 25% or 40% works perfectly.

Regarding the east-west fluidbox: we prototyped it, but unfortunately the Factorio engine ignores fluid filters on crafting machines — it assigns fluids to input boxes automatically based on recipe ingredient order. This means there's no reliable way to control which fluid goes through the side connections. For some recipes crude oil ends up going sideways instead of water. Until Wube changes this engine limitation, we've decided not to ship this feature to avoid confusing behavior.

Per-planet unlocking (different stats for inner vs outer solar system) would require separate entities with different sprites, so it's not something we can do quickly. We'll keep it in mind though.

Thanks for the response, it's a really cool building.