For some reason I was thinking I tinkered with the Config settings once on an older build and totally got rid of the extra lanes, though for the life of me I don't remember when or how I did it. I can at least tell you that I'm fairly sure I did it, though. Sorry it isn't more helpful than that. lol
As far as the marquee goes, I think that's something hardcoded in. I've never seen any options to change that one. :S
For those videos you wanted, I can at least help you with that. Mogu does have the V4-V5 videos, you just gotta know where to look.
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Scroll down until you find the black and white crossed videos for the V5 ones. Not sure where on there the V4 ones are, but I'm sure they were kept around somewhere.