Roots also don't allow you to continue walking. They are very clearly "you cannot move". A cripple would be a root without the actual rooting, which is just annoying and unclear. (if someone is rooted, the things literally holding them in place are an indicator they can't move. If someone is slowed, the ice under them or yellow slow lines show it).
Silences give a very clear indication you're silenced and you can still move. I'd imagine there would be a clear indicator above your head informing you you couldn't, a debuff on your buff bar, and similarly to silence your affected skills would be greyed out.
And that's bad design. if Vayne/Ezreal play perfectly, they can kite most people. Giving Ashe that same kiting power without her actually needing any skill except autoattack them 3 times and walk away while attacking isn't really great.
If Ez or Vayne press E they can kite most people, It's not overly hard.
Oh, that's great to know. I only need 2 assassins/bruisers diving her at the same time to kill her. Great to know the main way to beat her is constant diving 2v1s.
Or one guy with a CC, or an assassin who's smart enough to jump her prior to eating 3 AA's, she only has 600 range to AA from and at most around 1.7-1.8 attack speed. Kha's jump for examle has 600 range non-evolved and 900 rage evolved, don't think it should be too hard to jump on her before she autos you 3 times.
...How does Vayne, Graves, or Lucian duel her. Ashe has higher range than all of them, and due to her slow + crippling their mobility + arrow she can literally stay out of their range while killing them. Vayne would probably be worst off, since literally all her skills require her to be within autoattack range to use, and without Q to gapclose she can't get in range to do anything.
You really can't kite with a 50-100 range advantage, you can land an auto and back off before they can auto but not kite due to being animation locked. I'm more talking live but even with this Graves and Lucian should easily outduel her, since their burst is high enough to kill her after arrow. ADC 'duels' are also a little bit of a misnomer, they tend to go to who ever's the most fed>who ever got the jump>a strong duelest>everyone else and in a lot of cases end in one party just exploding.
Ashe presses R, assassins suddenly stuck and you either run or your team collapses on them. Guess what, the class based entirely on killing people 1v1 is good against the squishiest class based on doing extreme single target dps in teamfights.
And they still would be, the only people tagged assassin who lack a gapcloser of 600 or greater range are Ahri (who relies on range anyway), Evelynn (no shit), Fizz (but the combined range on E-Q will let him reach, and he only misses out by 50 on Q), Poppy (what do I say about this one?), Riven (This is one that would really hurt Riven, but she'd probably be OK), Shaco (deceive still stealth's, he'll be fine), Teemo (why he's classed as an assassin is beyond me), Twitch (actually outranges her), Vayne (could hurt Vayne, Vayne needs hurting) and Xerath (WTF Rito)
Making the squishy class suddenly able to 1v1 anyone except mages, people who used invisibility and 100-0'd her (which would actually be hard, since she could press R and then cripple them and easily win), and an adc with a higher range fighting her while her ult is down isn't good.
There's a counterargument about assassins duelling tanks but it belongs in a different thread. Honestly this wouldn't make assassins bad against Ashe, they still in most cases 100-0 her before she can land 3 autos. It makes mobility reliant bruisers such as Lee and Xin worse against Ashe, as they have a much harder time sticking to her and gives her an opportunity to outplay those assassins more if they misplay than anything else.