Natacha is kinda bad even for a niche weapon. Yes, more useful against demoknights (and charging pyros), but I feel that it's just better to go with stock minigun against scouts due to the minigun dealing full damage compared to Nata. It just isn't really useful to slow down a scout a little bit in exchange for a lot less damage. Honestly if the gun is hitting the target, Nata gives the scout more chances to get away due to the longer TTK. That said, I wish they never took away the +100 ammo it used to have, because that's all it really needs to be good as a niche weapon. I think that Tomislav is still the best overall choice, or at least on par with stock mini.