How would your character(s) change if only films/Clone Wars were canon here?

[Siobhan Kerrigan]

Siobhan wouldn't be able to throw walkers...or fly. But other than that she wouldn't be particularly different. Her powers are movie canon...just more over the top. Might have better duelling skills since she'd be less TK uber.

Because there's only the shining light or the darkest abyss...she ends up darkside.

 

[Arumi Zy]

Nothing would really change for Arumi, he would still be a sexy beast of light saber swinging proportions.

 

[Ak'lya]

Strask..... I'm not sure. Are bothans still Canon? Mon Mothma mentions them, but other than that, I'm not sure. If not, than he'd be a human spy trying to build.an independent spy net on a rebellious streak. And Askrut would just be human.
Joshua is fine. Ambassador is a position in any Canon.
Saran would loose her species, and her primary advantage: her sight. Other than that, she remains unchanged.
Dalansa's gone, completely. Her character concept goes out the window.

 

[Scherezade deWinter]

I don't know, because I couldn't get into that show, and I'm not entirely certain which bits that I know of the EU came from there and which did not.