True, but I'm not sure that blazing fast speed, even if you don't have great vision or tackle breaking ability, isn't a major asset even with the new rules. The other team can't move until you catch it so the ability to get up to speed quickly and have a high top end speed might get you an angle on the defenders and make it hard to catch you. Also, if you get past that first line then the speed will certainly help. I can see him being used on things like reverses where he can use his speed to make the corner once the other team is committed to the side of the field where the initial returner is.
Nobody really knows how the new rule is going to work out in the long run, but I'm betting on Rizzi to have a better idea about it than Vikings fans.