For about 25 I'm lowering all my tabletop games' vehicles. For flyers I do that by shortening the flight pins. All my 40k Eldar got that treatment, I even did that with my Imperial Assault Jet Troopers.
My reasons are transport and stability reasons, but above all just because I like the extreme low level flight appearance ... I never did that to cheat for LoS reasons!
Do you think, that this is within this games rules?