Some comments:
The LC does not 'need' spots if you have the full LED light cluster...
Spots can be acquired for a lot less than the BMW integrated kit. They are nice but not that nice.
You have to decide what you want/need as Garfield indicated.
I disagree, but only slightly

I find that the LED headlight of the LC makes a much sharper line where the light ends, i.e. where light meets dark. A normal headlight fades nicely, while the LED light tends to have a more defined, absolute line where the light ends. The darkness around that is much darker than a normal headlight.
I have noticed this in general with LED lights, including the LED spotlights I have at home. The light they emit is very directional, unlike a normal incadescent or flourescent type lamp that spreads its light in all directions.
I'm looking to fit spots just to overcome this issue for me. The fact that it makes me more visible to others is a bonus.