That is what I am thinking, too - - it would be fast and easy - but you essentially are using a lot more fabric (not saving scraps). In looking at this YouTube site caught another video of Nat Sew Circle (same company) that deals with sewing and variations of circles in your blocks that was also interesting:
https://www.youtube.com/watch?v=LAsLjQQpfLw They have some great ideas and look nice, just not fabric saving. But I plan to try a couple blocks of them for fun and see. :-)