To me, that first squatting video looks so good, probably the best I've seen in quite some time. I mean, you can just "see" athletic strength in those squats, not just "squatting" strength. It's hard to explain. It's interesting you can squat so deep with such a narrow stance, maybe that's why it looks like that.
As for the plyos, I'm not even sure if you need plyos. I'd say maybe more dunking and paying more attention to technique/plant rotation etc.