OK, so after thinking about it, I figured "Why make these things and not be able to share them?" Therefore, I sat down and reworked the entire design and came up with the following:

The size is the same, but the design is 100% my own, so I can put them up for everyone to use and there are no nagging "You stole our IP" issues.
Here's the plan:
Tiles are 3x3 inches. Why 3x3 you ask? Here's why: First off, it's pretty darn close to the original FW road designs. Secondly, after playing around with the numbers, based on a 4x6 foot table, it's easiest to scale up from a three-inch tile. Your "city blocks" can be 3x3, 6x6, 9x9, 12x12 and you can still use the 3x3 road tiles.
I'll also make available plain "concrete" pads that you can use as "city blocks" to set your buildings on in order to give some sort of unifying feel. (I'll post an image later showing what I'm referring to.)
What I'll do is provide one sheet of each type of section, so it's up to you to figure out how many to print based on your city planning.
I am also going to be making a set with foldable flaps, in case you want to mount your sections on card or thin foamcore. This will eliminate the effect of the edges of the mounting material being visible. Conversely, if you want to plan your city and adhere your street tiles directly to a larger surface, like a 2x3 foot foamcore sheet, you can do that too.
Anyway, I'll post more as I have it - any comments, critiques, questions?