Can't speak too much for the last two, but the glaze can be removed with a 3M headlight cleaner/restorer from your local Autozone / Advance Auto. Costs about $10 I think and includes sanding discs for your drill and polishing gel. That's still on my to-do list also.

Folks around here tend to use one of two products on the cladding, Mother's Back to Black or Refinish Restorer. B2B does a great job IMO but has to be reapplied every few weeks or so. Those in drier states say dust sticks to it pretty badly, and it will run in heavy rain (especially if it rains within a day or two after you apply it).

Refinish Restorer is a semi-permanent paint-type liquid you wipe onto the cladding. Reviews from many members are very positive, in that it lasts for at least 6 months, doesn't attract dust, and doesn't run. Downsides are that it can be swirly if you don't take the time to apply multiple even coats, and that a few people have expressed concerns that it could damage the paint if you get it on the body. Don't know how true that last part is, just remember it being mentioned in another thread.

I'm paranoid about even the chance that I could damage the paint, so I use B2B and apply it with a Mother's Power Ball. Takes probably 15-30 minutes to apply an even solid coat, and the only manual wiping you have to do is a light rub-down to get it perfectly even.