As a Player New To Cassiopeia
I actually like her playstlye and feel. Maybe she's not what Cass mains are used to and want but she's still a fun champion with a fairly good kit now. I just wanted to highlight that not EVERYBODY has a problem with her updated kit. She feels a little like a Miss Fortune mage. Her Q makes her fast, her W slows and meanwhile, you try to attack them with E as much as you can.
I do get where you're coming from though. My AP Kog is having some trouble lately due to the ult. nerfs primarily aimed at AD Kog. If they suddenly changed Kog's ult. range or some other drastic thing, I'd probably be annoyed too because that's one of the big reasons I play him. It wouldn't matter if his new kit was still good. However, for a new Kog player, maybe it wouldn't feel bad. The same with Cass. I don't know her old kit but the new one feels smooth enough.