I did get a chance, and it works! Nice, thanks!

Do you mean the extra exits or the roundabout itself? I can tell you, the circle makes sense, I use it at almost all my highway intersections. And the exits, I had not enough time to try it out, but I think they kinda make sense, when vehicles use them. And they kinda look cool, don't they?

That... is really quite interesting. I think I'll have to try it, because I can't decide if it makes sense or not!