Well 25% is probably slightly above average pickrate for a tank, considering how limited the tank pool is.
What has me worried is how low Winston, Wrecking Ball, Mercy and Zenyatta’s pickrates are.
Funnily enough, both tanks pair well and both supports pair well. It may just be a case of making one of each pair good enough to bring up the pickrate of the other.
I mean, it should. Low skill heroes shouldn’t be meta picks, viable yes, but not meta (like Moira is rn, she can be picked in any rank and situationally in pro player, but a high skilled ana can get more value, this way no1 is punished for playing the hero they like) otherwise the hard heroes become trash tier, as you’ll need a lot more effort to get the same amount of value or even less (like genji vs mei or old orisa vs rein) while being more vulnerable to faillure.