Due for a factory visit, what should be on my list?

[BeeGeeSHO]

I have an appointment to drop off my 2007 3124KS, I need to compile a "To Do List." Could I please get a list of general suggestions so that I don't omit something common sense inadvertently.

Sidenote: Does anybody know what upgrades the factory can do that would "modernize" my 2007 and add features that a newer model comes with? (ie: solar plug maybe?)

Thank you for your time.