Saying that they are not important seems a little bit abitrary to me. What is important or not is up to every consumer.
Now there you have two good examples of G27's features that don't work on OS X. I'm sure if I keep looking I'll find more.
Aren't there more alternatives? I get that a lot of people like the G27, but I doubt it's the only steering wheel "compatible" with the Mac.
I said the lights are unimportant because they are purely cosmetic with no functionality. The lights show up in the F1 cockpit on-screen.
You seem to be a little bit aggressive on this when people are only trying to help.
Look, the facts are these:
1) Logitech do not support OS X with their wheels
2) the basic functions of the wheels work OK when you just plug the device into a USB port. When I say basic, I mean steering, breaking, accelerating and gear change paddles. Also supported are the buttons on the 'gear shifter' accessory and 2 of the buttons on the main wheel
3) force feedback is not supported on OS X after Lion (I think), but you can easily install the Logitech FF kext as described above in my previous post
4) there is also a very useful utility from Feral called Free the Wheel, which gives you access to all the 6 buttons on the main wheel, but force feedback will not work if you use this.
So, you have 2 choices, either have force feedback and only 2 buttons on the main wheel, or use Feral's FTW and have no FF but all buttons working.
Personally, I use the FF option because driving without it is a waste of time in my view.
I use the 2 buttons on the wheel for KERS and DRS, and have the shifter sited next to my wheel so that I can use the buttons on it for giving instructions via the D-menu, looking left or right or accessing replay.
Has worked perfectly for me and many others for a number of years now.
If you are not comfortable with the few compromises you need to make to use wheels in OS X then perhaps you should use Bootcamp.