My friend's mom used to put a tart chopped apple in sauerkraut...yum!! She rinsed the sauerkraut, put a fresh apple in, peeled and chopped, and cooked the lot with sausages. I think it would be good without the meat, too, but you might add some caraway seeds while cooking.
I hope you enjoy your meal, sounds great! And sauerkraut has many health benefits -- salut!