Not really "needed" but highly recommended. To my knowledge no changes have been made to the stand for '07. I rode my bike for 2 years with an un-modded kickstand and never had an issue. Eventually I had to swap it out only because I lowered the bike.
As for the second question ... are you asking if HID lights on an '07 make as big of a difference as it does with previous models? If so, I believe it'll be the same as the lighting system has changed very little, if at all, since '99.