Not much attention?
Forretress is one of the premier rapid-spinners, Spikers and Toxic Spikers in OU competitive battling! He gets so much attention he's an OU pokémon, and can't be used in lower tiers!
Hmmm...I gotta say, I wouldn't give any of them a family member...yeah, Skarmory or Mawile could have one, but a gap of 3 (Skarmory) or 2 (Mawile) generations means the style would probably be too controversial, and I'd get angry with all the haters.
So, I'm going to answer the topic Xilfer put forward which was completely ignored...
If you could improve any Steel type pokemon wich would it be and why would you improve it?
Personally, I'd give Probopass a higher HP stat. In order to stop him being a pseudo-legendary, I'd knock his Attack base stat down by 25 to 30, and his speed from down 30 from 40 to 10. Neither of the aforementioned stats really do anything for him, and he has average special attack to make use of his movepool, as well as good defenses. So, with the 55 points I've taken off attack and speed, I'd put them into hp, giving him a base stat in hp of 115. A rock/steel-type with access to large movepool and 115/145/150 defenses? Now that's something I'd take advantage of.....then again, it's fun using him when he's already fairly good.