+2
Strong oppose on my end, for several reasons. One I already mentioned: they're too similar to QS. They would "double up" frequently. Ideally, categories are reasonably distinct.
Wins are also heavily influenced by the surrounding team, rather than the individual player, which I think is dissonant with the nature of fantasy.
I do not agree that Holds are "effortless." But even if they were, there would still be a cost-benefit analysis on whether to target them with your roster spots (knowing full well most days you won't get one from a given reliever), which has a major strategic element.
Also, "harder to find" is not a good metric. Triples are hard to find but would be a terrible category.