For myself, I'd rather they put the effort in making a strong scope!
I think that past a certain point, the light gathering qualities will be overkill!
Most good, fully-multicoated scopes will give you enough light to shoot past most legal shooting times, that becomes overkill!
Making a scope that can handle recoil, and ATV rides, priceless!
Leupold does a good job of all the above!