I'd say you're due for another transmission fluid replacement.
Coolant, it's a tough call, I think they recommend every 2 years but I'd check your manual.
As for lube, I believe it's recommended to use white lithium grease on the sunroof. And I'd put some on a rag and with the antenna extended, slide the rag down the mast and then bring it up and down a few times to work it in.
Headlights, well, some people have had good luck with Meguirs Plasticx. But I never really have. One guy went to the length to wet sand the lights in stages. His lights came out beautifully, I would go that route should I ever need to buff my lights. I'll see if I can find the link to the guys write up.
Seems like you do a terrific job (more thorough than most people to say the least) of keeping your car in tip-top shape. I'd say that car will give you plenty of good service back for it.
zerothread/313767