I really like the idea of this mod! Having multiple spidertrons with different looks and responsibilities makes sense.

Overall I personally find the implementation a bit too much. This is on me, but I like to keep my game vanilla-ish without too many tiers of the same concept. Having 3-4 spidertrons with increasingly more rocket launchers is a bit same-y.

However having prime legs, or small nimble spidertrons and dedicated engineer spidertron is very cool. I believe in 'less is more' so my suggestion is to distil variety a little bit to make each spidertron different from each other (size, form or purpose).

Another thing which could be cool is of course to have dedicated icons for each type - now they use the default spidertron and it is difficult to see what is in your inventory. On a somewhat related note I would like to see a description of the new spidertrons ingame with their purpose / strengths and weaknesses. It could improve immersion.

I will keep an eye on this mod and see where it evolves.
Keep up the good work and have fun!

Thank you very much for the feedback! I agree on the icons, but I'm no digital artist so I can't do much more than changing colors.
About the combat spiders, there's much I can do with them, but I'm playing the game now myself instead of modding so the next update can take some time. Just for reference, I want one of the spiders to have a landmine-laying ability (so just a scripted weapon that lays special landmines when fired)