As the title says, i think it would be real cool and suit his kit nicely. Would allow him to cross gaps he couldnt before so gets him to the team a bit faster and might give him a chance of surviving in this crazy stun filled game.
Just a random thought from a 3000sr Reinhardt main. Whats everyone else think?
OMG yasss, GIVE DADDY REINHARDT A NEW ABILITY
What about a genji dash for rein? Or a Thor’s hammer ult? Just joking. 
Yeah but Rein has the highest pick rate and a 52% win rate and his kit doesn’t involve a hit scan weapon. By the logic of the OW population I therefor degree that Rein requires no skill to play and must be nerfed into oblivion!

This is sarcasm btw. I know someone will take it seriously if I don’t specifically mention that.
I forward the idea, that the give rein a skill where he straps a mini nuke to his hammer and the next person he smacks with it gets nuked
They should strap a sniper rifle to his hammer. 
And what would you nerf in exchange?
Im not sure he would need a nerf to go with it. Maybe it would make him mega OP, i dunno. i just want to put a little fun back into main tanking.