Firstly thanks for your input.
Tbh I like the models and their melee damage output + adds a little shooting which I like and I can see them being useful aiding a unit/ to soften one.
The battalion is cool and I will no doubt try it out. I like Skrag as the general for the cp generation, I have not yet had a game where the control of the moon was important. I have also thought about making the mangler boss the general, when used with battalion I think it makes a lot of sense.
I am waiting for the looncurse to be out to fill my army up.