I rinse canned beans before I use them. That might help.I can't do canned beans, too salty. We cook our own beans in bulk and freeze.
Hot sauce sounds good, but I'm the only one who likes heat.
Cooking / Freezing works pretty well. IIRC, they last about 6 months in the freezer, so you can cook a few kilograms of beans every few months and you're good to go. I figure this is the healthier way to do it.
We have two Dutch Ovens which helps.