I am so glad you included a little writeup. There's a lot of thought and theming behind the action, gameplay, and even animal choice that you've included that I wouldn't have been able to appreciate otherwise!
Swarming the map with mud that only your faction appreciates is fun, intuitive, and really cute haha. I love all little bit of whimsy and this faction is chock full of it, without really breaking the story that the official root game establishes.
It's also so fun that each construct has a different ability, and I definitely see how you'd want to prioritize certain ones during each game and matchup. The collector especially is really fun, and I do indeed like the little nerf to the VB. And yeah you've included balance in them that allows other factions to entangle with them in a fun and incentivizing way.
Scoring based on the amount of constructs is definitely balanced, but I almost wonder if the constructs could have more of a hand in generating those points themselves or accomplishing a goal to get those points. Rather than just a point for each one you've got. Not a nitpick, just some design space you've given yourself that would be fun to use!