I'm really tempted to start a pure melee character, but I just can't for the life of me get over how poor some of the weapons are, if not all of them. I want to be a towering goliath in a full suit of power armour two-handing a huge sword, or hammer, but the super-sledge is almost like a toothpick in this instance, why Bethesda didn't implement the fender swords like in NV etc really does baffle me, they're menacing and really lore friendly, and nothing says bad-ass like chomping through enemies with a big ass sword in your hand. Even without power armour, the weapons seem so small and insignificant, Kremvh's tooth looks awesome, but I'd sooner use that on a sneak/assassin type build.
Even something like a vertibird blade would be awesome (and huge!) Even the Rebar clubs have been removed, it's pretty much my only major gripe with the game really. I hope Bethesda, or atleast some modders will make some decent big-ass melee weapons for use in future.