Those are nice pics.
I don't think it's all that necessary though, smp isn't only for amazing builders.. It's for the rest of us.. and bored builders.
To be honest i think any minecart track is ugly, but if people want to use them to get around that's fine, when they aren't griefed that is.
You could make the same argument about the small bunkers people make to survive the night when they are new, some of them just don't think to tear them down when they are done with.