Despite the fact I am a Linux user (I am writing this on a Linux box) I am against a Linux LFS client. Why? Simple: It would detract for the sim. If LFS was to be ported it would take time away from Scawen that would be better spent implementing new features in the current Windows client, such as the improved AI etc.
Another thing that would happen is that the Linux version would run slower than the native Windows port. I have seen this trend for all the games I have tried that have both Linux and Windows clients. Take UT2004 for example. On the SAME machine I get 20-40fps lower on average than in Windows, with the same graphics options.
I am also happy running LFS in Cedega. The shadow bug was solved for me by just disabling shadows altogether, and I do not need FFB, as my wheel does not support it (I have a Saitek R220). I may get a lower FPS, but it is better than it not running at all, and saves Scawen a lot of time.
The final thing that I would disagree with the Linux client idea on is the idea of unlocking. If someone was to, say, update their kernel (which is pretty common, considering kernel updates are released pretty much every few days) would that waste an unlock on that machine? If the way that unlocking works on Windows was used, yes. It is all well and good directly porting the game to Linux, but if it is going to lock itself again after a kernel update, then what is the point in it?