Instead of cardio, go the route of high intensity interval training or general physical preparation. Those two types of endurance training (they're not specifics, but soooo much in the exercise community hasn't been specifically designated) are what is done by fast-twitch athletes for the most part. American footballers, sprinters, strongmen competitors, etc have zero need for cardio/slow-twitch exercise except for active recovery purposes. Too much slow-twitch exercise for these athletes is actually deleterious for their sport specific adaptations. 100 meter sprinters should run a slow mile, and a mile runner should lose steam a little over half way through a 100 meter sprint.

Endurance is relative. a 200 meter sprinter needs just as much endurance as a marathon runner, it's just a different kind of endurance. Most dancing is quite fast twitch, and cardio is less important for it. There is a lot of carryover from fast-twitch endurance to slow-twitch endurance too, but not vise versa. If your fast-twitch fibers are activated your slow-twitches are maxed out for the duration, but if just your slow-twitch fibers are activated your fast-twitch fibers are not necessarily.

High intensity endurance training burns more calories than cardio anyways. Cardio only burns the calories during training, but high intensity exercise increases metabolic rate for hours after workout, not to mention the time spent exercising is much more productive.

Really the only purposes for cardio over other better options are to get better at long long duration stuff, as active recovery for high intensity training, and to get super super lean. Not lean like anybody realistically wants or can maintain without steroids. Bodybuilding competition lean. Cardio is often a must for super leanness simply because you can do a tonnnn of it without overtraining.

Besides, the more prominent you become at slow-twitch activities (beginning at a certain point), the smaller your muscles get. Slow-twitch fibers are substantially smaller with substantially lower growth potential than fast-twitch fibers. And when it comes to men, big muscles = big sexy.