Well, my whole point was that by design, it's supposed to be equally difficult. I don't think that the presence of another pull in his kit proves anything, actually. Especially since they are both small pulls, unlike Blitz's or Naut (well, Naut's is quite short too, but it's followed by a root, which makes sense... Whereas Thresh's only follow-up to his pull would be... a push? That's what you mean? Thresh's Q+E is not worse than Blitz's Q+E, or Naut's Q+AA... Not even talking about the rest of their cc. I don't think this would "enable faceroll". You're kinda exagerrating and missing the point.
"Thresh’s E is a small directional knock that Thresh has the power to shape the movement on – he can push enemies in a line away, pull enemies in a line toward him, or anything in between."
It doesn't look like it should be more difficult to pull than to push. The way it's said seems to mean "do whatever you want with your ennemy."
And I was specifically talking about the case where you smartcast, actually. I had never thought about the issue if you don't use smartcasting.
Oh, and Thresh is already able to run away while pushing back, and it's way easier than pulling anyone you just launched yourself into with Q. Didn't get that part of your argumentation, except if you're asking to completly remove the pull element of Thresh's E? O_o
PS: Since we're now kinda discussing about CertainlyT's intentions, I think we should just stop the discussion there; our point about the E feeling clumsy has been said. :P