Anyway, do I like this idea?
No I don't. We had those "Vigilante Antiminers" around before, it wasn't fun. Turned into ooRP hate and got disgusting.
Why create another minerhunting faction? I seriously think we have far enough, just ask BMM, Krüger, DHC, IMG (though they have that many enemies because they are spread over the western and southern indie/borderworlds/bretonia)...
If it isn't the independent pirates, Mollies, Hessians, Rogues, Hogosha, etc. hunting you, it'll be the Mercs trying to kill you.
I think we've seen enough complaining of DHC, Krüger and BMM to know they have problems getting members to mine with them. IMG had it's bad times too in the last time, still having lots of members but having had some heavy hits on morale and gameplayfun lately.
So, sorry, but it just isn't a good idea in my opinion. You'd just be like everyone else. There's also the problem with what ID to go with, I'd say the closest RP-wise would be "Gaian", but even they are rather "meh" to "neutral" with IMG for example. It'd be simple terrorism, eco-terrorism. RP-wise the idea is "alright", but in game we currently don't need it.