Some designer questions

Seriously, I had some things to ask and I'll try to remember them all :
1) The Engine manual bench has some results differing with the auto : the needle is sometimes off with the numbers seen on the dyno. Is this a bug or am I having strabismus ?
2) Is there a way to duplicate a fixture ? I'm having difficulties having to items the same size.
3) Could there be an option to change the item sub-class ? Example : the round taillights. Could we have an option so if we made a mistake and want the red instead of the orange one, we could easily switch over to the good one while keeping its size and position ? As it's the same 3d model, it's not as if we would have placing issues like "too much bigger for it to stay here".
I actually had this while changing a grille for its chromed version.
4) How does the headlights "dig" in the body ? I was wondering that while seeing grilles and vents through the lights glass.
5) Are bottom air extractors (Le Mans style ?), side mirrors (M3 ?) and side vents (Testarossa ?) planned ?
6) Is it technically possible to make empty headlights so we could place lightbulbs ourselves ? Just wondering.
7) While designing a 1987 engine, I saw on the following forum a limit in the engine designer :
http://automationgame.com/phpBB3/viewtopic.php?f=34&t=2329&hilit=ferrari+f40
As far as I understood, the turbo exhaust manifold is limiting the power output so we can't reach the F40 engine. Is a better manifold planned even if it's rarely used ? I know it would be a pain to make it, but I wanted to know if we could someday make a real 80's supercar like this one.
8) Are more body colors coming someday ? Is it actually possible to make RGB sliders ? Maybe even a "shininess" slider for custom matte paint ?
9) I noticed a bug in the "Lips" sub-classes : when clicking on the return arrow, we can't get to the main class, we have a blank menu instead.
Well, I guess it's enough for now...

Thank you very much for reading my [s]novel[/s] topic.
Automation FTW !