The knockback is small and the slow helix is on the same level as her escape helix so tough choice on either your only escape or a slow. Alani’s cc is good but not that overpowering and Miko’s cc isn’t that bad. Since Reyna only has one on and it only affects one foe, Ambra lost her ult’s slow (big nerf) and her solar wind has 2 ways to knockback with one being reliable and the other more restrictive and risky and Kleese has 2 cc with both being avoidable but still useful . Miko’s slow can stun on hit or leave big trail during flight as well having a good slow boost at level 1 with his helix if it so chooses. so it’s pretty good for a support
It’s just going to be really hard balancing supports when 2 of them have cdless heals as the epitome of the class.
To off set that on other support BB’s where they only way of healing is with a cd skill is going to be a huge task that Gear box will have to deal with as more supports are added.
Healing in general is getting an indirect nerf by the inclusion of wound on more harassers in the next week or two. Nothing else should be changed until we see how that shakes out.
Having said that, the situation described above, with teammates jumping on attackers to allow Miko to get away sounds like great teamwork/communication. People often confuse that with a character being overpowered.
Miko also had huge sustain though which majorly helps out which requires cc to take him down (your teammtes can peel foes from your team’s Miko)
Like there’s builds you can get +18% healing received and push it to like +33% if you optionally desire too. and still get you needed healing given and survival stats.