Any additional car is welcome.
Driving the BWM Sauber F!.06 within todays most realistic sim will be a very exciting experience, no question, although personally I would prefer to have a BMW M3 GTR in LFS.
Now with the BWM Sauber F1.06 LFS rounds up the whole bandwidth, from 55hp Mini to 700+hp F1 cars, which also demonstrates the outstanding LFS physics being capable to handle them all. This is one of LFS's strengths, so people can pick up various types of cars depending upon their preferences.
To me this April thing isn't just a simple patch, it's a major update and will mark a milestone within the whole LFS development process, especially since major global players are now involved. Although we don't know the details about the partnership with BMW and/or Intel, everything seems to be possible now. Real race tracks as requested by many people are no longer out of reach, this has become more a less a matter or manpower, so sooner or later (guess even sooner) the devs will have to enhance their development team.