Dakar used them the first season they came out and lost in the playoffs because of it and never did again. I think we have a couple older players who do when they get 4 but not for specific games, just to get the SP.
Equipment needs to be a little easier to roll IMO, maybe make it more expensive or something but I have seen people roll for 2 seasons or more every day and not get something worthwhile. Then I have seen people in one roll get 3 very good pieces or I have rolled back to back nice pieces. Too freaking random.