Tis a good idea however a slight problem I can foresee is people who want to have a more focused ride or "hoon" as you put it , but aren't hugely fast/confident riders or have a bike that won't be able to do the speeds that the bigger bikes can (I.e me! :P) I don't want to go on a bimble through villages but imy bike doesn't have the pace to keep up if your blating around everywhere at 120.
Might not be a problem so long as people don't mind waiting an extra few mins marking the junctions etc. Just a thought!
Still gets a big :thumbsup: from me!