Just a little suggestion, I think instead of you just choosing the recycling efficiency yourself (and it being default 100%) maybe a better idea for a bit of balance would be a toggle (and make it on by default) for recycle efficiency based on factory tier? ie. T1 is 25%, T2 is 50%, T3 is 75%, T4 is 100%, (or 50>67>83>100), or whatever feels best? I feel like it'd be a good way to integrate into Factorio's base "productivity gets better with upgrades" aspect.
