poor take, the part of jetts dash that needs to be nerfed is its defensive capability, not its offensive part. The part of Jett that is busted is when she's dashing out of danger rather than into it, ie dashing away from a wide angle as opposed to dashing into a site. Re-adding the pullout animation hinders the offensive usage of dash which what it was meant to be used for, but doesn't affect the defensive usage of it, which is the broken part of her kit currently. That change would make her more defensive than she's designed to be as a duelist and further push her into the role of solely using the op and not entrying.
what about this? (and I know its wild):
Updraft is 1 free per round, second one is 100
Knives are bought 200 a piece similar to chamber bullets, no regen upon kills (or maybe gets given back the single knife that landed the killing blow, rewarding 1 taps rather than body shots), also eliminates the 'free' eco rounds jett gets
dash becomes her ult but for 3 or 4 orbs, meaning she needs to focus slightly more on grabbing orbs/teamplay/planting etc to get the dash multiple times during a round as opposed to just killing, and she doesn't get a guaranteed dash at the start of every round to wide swing an angle with an op.
Aware these are wild changes but I think it might go some way to alleviating how oppressive she feels without making her feel clunky or useless