blind pick assigning roles idea

ok so I was playing a game called vainglory on my phone for those who don't know this is another moba

and I realized after I picked my champion I can click on an Icon and choose which role I play (lane/jungle/roam)

so why not put that in blind pick? after picking a champ you can choose your lane in another tab and if a lane is already chosen you can't pick it this can help reduce the problem of who called first and insta-lockers can be found more easily and subsequently punished

so what do you think?