Charles David Henderson
I don't know about where you practice Maggie, but IME kihon practice is useful for more than figuring out where your hands and feet go. Many shihan routinely emphasize the importance of "basics" for everyone.
I think, nonetheless, you're right about the underlying problem with uke.
I think that's really the root of my point. Static practice is about learning and focusing on basics. A heavy, uncooperative uke is inappropriate for the situation.