Taliyah's W should be something similar to Syndra's ball pick-up or Viktor's laser. Currently, it stops your character from movement upon cast.
You also can't perform any other actions until you activate it a second time. Would be pretty cool to activate W first into E instead of mandatory E into W since E also has a stand-still cast time.
Quepha1 votescasts that don't interrupt movement are actually much more powerful than they appear by giving the champion incredible kiting and chasing power while harassing. Taliyah's W being a directed knockback is already incredibly powerful and I'm pretty sure it's very intentional that she has to risk giving up a lot of position to try and land the spell. It also supports the cast action where you cast the spell and can quickly cast it a second time to direct your knockback.
