Personally I like old paint.
To me it is more important to have my bike running right first and then work on the cosmetics.
a few years back I found an original 78 tank, tail and side covers , the tail is faded, the tank is very clean inside but had some issue like yours on the out side, I found that a Toyota black touch up pen worked real well on the scratches and the little bit of rust damage around the emblems.
Is it perfect? far from it but it is still original and that's what I like, so do a lot of other folks,
they get up close and see that it is original paint , then they look at the mileage and smile ,
When you get on the thing , push the starter button and she comes to life with out hitting the gas then you roll away and they be watchin
makes me proud.
I'm not against painting body parts and I will have to on my new build because I don't think that I will be able to find original paint parts for a 77 and there are a lot of cool colors out there to chose from .
Go with what ever makes you happy
I'll look for some finished shots but right now she out in a cold garage and it's night.
Going on 4 years and the touch ups are holding up fine
Note; Borrowed from PaintWorkz's customer photos, I hope that's OK