While we're on a Solazy kick, or I guess I should say "I", I've always really liked the walls he made too. There are 7 tiles in the set (possibly 8 if you include the one tile city) that include walls. In order to make them functional, there would probably have to be 24-30 of them. Otherwise, it would simply stretch out the wall before the field would just go around it anyway. It might still be difficult to make it work right regardless. We started this discussion and it became Gwommy's Barriers and City Walls. I'd like to pursue this the way it is though if possible. I've been very drawn to the diagonal flow of these tiles. It would likely need a playtest very early to determine viability.
As before, the original is
HERE.