I'm not gonna slate TCW in general because I have all seasons and actually sometimes watch them, some parts are really clever and add nice elements to the universe and some parts are just on a sugar high and for kids. I just think that Ahsoka is a Disney style character while I realise not a spawn of Disney I think George Lucas wanted his own style of Disney Princess. You're right all characters are now property of Disney but let's remember not all of them started out that way.
People can't bash on OT aliens because they came first, they have probably inspired dozens of prequel and beloved CW aliens. I don't care how much screen time they got they will still be playable action figures and look cool as heck.
On a positive note if we are gonna receive animated characters in realistic form can we please get Cad Bane and Embo before Anakin and Obi Wan.