I'm not sure that any in our group cyber sew enlarged the blocks, but it is certainly possible to do it with the software. You can just choose your block size in the software. Lacelady did enlarge hers by making her sashing larger. That effected the placement of the tris, but worked well and she ended up with a queen size.
Really any quilt you make using the Dear Jane block designs would be considered a "Baby Jane" (the original quilt by Jane Stickle being the Mother quilt). Brenda has lots of different layouts even in her book.