By "big swastika" you mean double spiral?
I think I always try to build something which should be called "tripple spiral" using your naming convention. I also prefer playing on desert, where water and food should be also delivered. I transport them using trains, I think I should do it by air to keep spirals perfect. But I like trains entering the city!
What is that you don't like about it?
I know I should not compare the game to real life. However, lack of road crossings in the cities is the only thing hard to accept for me. Maybe because I got used to them in old times, when there were no CB scripts and I was not thinking about city grow mechanics. And up to now, just for "visual satisfaction", I make crossroads in the cities. But spirals are unevidable if you need olympic-level results
It's the best layout unless you can use simpler spirals (for 4k mb).
Agreed.
...free more space in center...
Even more "crazy" idea than spirals