You know, I really like this mare.
Normally, I don't suggest or condone, crossbreeding, but I think this girl could produce nicely, carefully bred. "Carefully", being the operative word here. Where are you in the world?
Certainly she has a few minor faults, but 100 times better than many crossbreds, which people decide they want to breed.
I don't think she is too overly long really. I do think I see the tiniest hint of a roach. Certainly she needs more angulation in the rear. She has lovely short cannons and beautiful feet, (probably from the draft in her) but she does toe out a bit all round. I'm a draft lover, so do like her head and neck. However, both could be improved a bit, (a little more refined and with some length in the neck) with the right stallion.
In the movie, she looked overweight. She looks much better now. With the draft in her, she probably could make a nice jumper for you. Drafts love to jump! Ask anyone who has tried keeping them confined. My daughter's Worthington at his first show, jumped clean over the stall gate in the barn area, with not a mark on him and he was just over a year old and not big, being a Gypsy Horse.
Bep has given you some ideas as to stallions to consider. So now, if you do decide to breed, you can bone up on your homework, regarding what it takes to breed/foal out etc. and start considering stallions from which to choose. You have almost a year of homework ahead.
First things first. Get her tested for LWO. Then research breeding and foaling. Not all mares foal easily. I've heard of so many this year, not only losing the foal but the mare and foal. You'll need to know what to do if your mare has problems. After that you can consider the stallions.
If you do breed, make sure that if you have a colt, you have somewhere to stable and pasture him, when he leaves his mother. You don't want a colt to stay with his dam too long, so that he breeds her. Some colts can breed and produce, at 6 months of age.
By the way, kudos to you for taking advice here willingly. So many become upset when when asking for help and then really don't wish to hear the faults of their mares. To me anyway, you are just the kind of young lady the horse industry needs, to take it on into the future.