Will be interesting to see if the rumored Sombra announcement actually happens tonight or not...
My personal hope/idea is that Sombra will have an ult which lets you select one player on the enemy team and one player on your own team... When the enemy player uses their ult it will be cancelled out and transfer to the player on your team giving them 100% ult charge instantly...
It fits with the whole "hacking" theme quite well and would really help to shake up the meta. I can't decide if the target player on the enemy team should know they've been selected or not - either way it would be interesting - if they know then they have to try to tactically use the dud ult at a time which won't cause them problems (or also when they suspect the other player's charge is at or near 100% anyway, effectively counter-wasting the Sombra ult)