Is there any plans to limit the number of spiderbots, either to follower count or to a number in the mod settings? I haven't done a full playthrough with them yet but initial testing leads me to believe you can have as many of them as you want following you (and without the need to recharge after a few operations on top of being faster), which seems like it would make them far more powerful than personal construction bots even in late game.

Just a suggestion, but there could be a tech for this, so that the number you can have is gated behind factory progression?

I like this suggestion, and have implemented research technologies for the next release :) The spiderbots are now gated behind a trigger-tech (mine a fish to unlock the recipe), and then follower upgrades can be researched to increase how many can follow you around at a time.