Is melee the only way to remove mutating spore deposits?

Yes it is. I'll have a little test later and might reduce the hit points to get rid of them faster

Construction robots would be lovely too, so I dont have to manually be on planet to keep building.

Do cars and tanks work? Only started yesterday havent tested yet.
Tanks could also be a remote way of doing it then.

I tried with a car, it's a breeze. Construction bots will work, too. The spawners - sorry, deposits - are now minable. Version 2.2.3 has been released with those changes.

This mod has better support than things I pay for wth

<3
Well, you got lucky - I'm currently in the mood for doing things for it, that's not always the case.

So I've been playing with the mineable deposits for a while, nice improvement.

However, robots doesn't work.

Any way I could get my construction robots to take them down? I'm at the level where fairly large areas are covered with these nests.

https://imgur.com/a/C0l2eZl

Thanks for testing. I'll have to do some research. If I understand correctly you can't mark them for deconstruction as you would with trees and rocks, right?

Indeed, or if I can then I haven't found out how yet.

I'm have a look this weekend if there's time. I'm doing a SA+ playthrough myself and would need the feature as well ;)

Apparently, unit spawners can not be deconstructed with robots. In case of the Gleba spawners I could change their type to simple entities like rocks, so they can be deconstructed, but for the Nauvis spawners that approach would disable the capturing mechanic, so they will have to stay as they are.
The only remote way to destroy them will be tanks. (When you are on Nauvis, cars are also a fun way, they are very squishy right now).