So I was a little disappointed that the Power Armor was incompatible with fist weapons or that there wasn't really a default melee attack for it. Especially after seeing the Pain Train perk.
And yes you can still use blades or blunt weapons with the Power Armor, none of them really feel all that appropriate (except maybe for the super sledge).
I love the concept that Power Armor is now a vehicle and not just another type of armor. But I think that it should have some melee specific weapons and mods along the lines of the Pain Train perk.
So how about that for DLC. Power Armor Melee weapons? A super version of the Power Fist, or a heavy duty sword like New Vegas' Chainsaw and Bumper Sword. Just make them entirely dependent upon wearing Power Armor.
And it could work in game if they're being sold by the Atom Cats!
If anyone would try to design melee weapons or even a new "brawler" style of Power Armor, it would be the Atom Cats. While the overall idea isn't the most practical compared to just loading up a gattling laser, it would have a certain style to it.
Maybe it's the Texan in me, but I'd love to see a suit of roughly modified suit of T-60 designed to boost the damage from Pain Train, with a pair of Bull or Deathclaw horns attached to the helmet. Or a Power Armor version of the Deathclaw gauntlet. Maybe it's a special suit designed to for up close and personal Deathclaw hunting?