While i do respect your opinion, as someone that has mained cass before the rework (i still play her (see my flair and name haha), but azir is a lot more fun to me atm...) i heavily disagree.
Her whole kit is basically 2 skills. A very powerful ultimate that is either pretty "meh" or insanely good if you have flask and you are able to use it right. And basically her E. Her W and Q basically just serve to enable her overloarded E and deal, what feels like, zero damage.
When i think back to the times maxing Q first was viable, the fun i had and how good i became at hitting those very rewarding Qs... i get sad with new cass. All she is about: i hit my Q, let me spam 1 button until im oom or your dead.
While with old cass - sure her E was spammy but it worked in such a way that to do it optimally youd need to get a pattern of e->auto->e->auto all the while moving towards them to reduce the time the E traveled. It was just so much more refined and satisfying to pull off well.
Her Q sure was really strong back when it had a 0,9 (later nerfed to 0.8?) ratio, but it was more or less hard to hit and rewarding. Both maxing E and Q were viable.
Also im so unhappy with the passive. Its just a gateway to my actual power for that my abilities suffer enourmous Ratio nerfs (0,45 ap on the Q from 0,8...)
Whats even worse is that not only does this passive gate me.. it feels like something i cant overcome through skill (for example it used to give a stack when lasthitting a minion with E..) now it just grows on its own and poisoning enemies is almost irrelevant.
Youre basically just sitting there saying... only 25 more minutes of regular gameplay until my passive is helping my Q do "ok" damage. It was horrible to start with and stashu made it even worse taking the controll of the player over the passive away.
Believe me my friend.. winning is one thing. Enjoying a champ, making him/her satisfying to play as well as exciting to learn and pull off thats another.
And to be honest... Her damage, that is suppose to be HIGH AS HELL, feels like its at best on par with champions like azir that can just AOE attack you from miles away. It sometimes feels like im a short ranged adc, that cant attack without mana and has no dash.
I always thought if you had very little mobility and single target damage, aswell as short range, you should atleast be dealing insane damage within that range.
Thats just my 2 cents... I for one are so hopeful, so so so so so hopeful that they will change her passive and give back power to her Q and W in this upcoming mage update.
Fingers crossed friends.