Support champions and dashes

There has been a lot of discussion going about supports, autofill etc. but I'm going to address something else. Why don't we have a single support champion with non-conditional dash? Like some sort of ability that can get a support out of a bad situation or join a teamfight by jumping over a wall?

's dash is targeted, only usable to enemy champions and iirc can even fail if cast outside of range. has a cool tunnel mechanic but it's still rather slow to cast, also Bard can be followed by enemies. Still, it is a good ability and a part of reason supports love playing Bard. can only be cast on allied targets. needs to hit a champion with a fairly low range skillshot. is relatively good in this aspect, as he can close the gap to any enemy target including jungle camps etc with a long range skillshot. And surprise-surprise, he is very "fun to play" and popular.

And that's it. These are champions with some instant gap closing power. Other "traditional" supports have some speed buffs at best.

This in my opinion is part of the reason why supports often feel useless. Everyone is jumping around like rabbits and sometimes you just feel abandoned as you miss all action. And inversely, if the fight goes bad, you know you are doomed.

Not every champion in League has a lot of mobility, some have none, but I personally would like to see some supports with mobility skills that are coupled with some utility maybe. Like Lee Sin/LeBlanc of supports. I just want to feel badass sometimes when supporting, not necessarily deal damage.