I don't plan to breed her anytime soon, but who do you think she could be crossed with?

here's her pedigree http://www.allbreedpedigree.com/cassia+f

German Holsteiner. She is 17 h tall, scopey. Never refuses, has a big heart. Super rideable - a beginner could jump 120 cm courses with no problems. Not spooky at all, won't buck, rear, run away in panic.. a child's mount

Currently trained for 135 cm classes.
Her neck looks kinda skinny but her bascule is great.

Any crosses you would suggest me? For a showjumping filly..

Again, I won't breed her yet. Just trying o het some ideas

Some more photos
her first time bareback

jumping 125 with an unexperienced rider

warming up..