I guess it all depends on how far you want to go with it. I've always considered this to be a pretty good kit especially when you consider how old it is.
The most glaring mistake is the gun barrel, but that can easily be replaced.
The other area of concern is the tracks. They are very stiff and tend to cause breakage in the idler wheel assembly if you are not real careful.
Other than that, I find it to be a most enjoyable build.
Happy Modelling and God Bless
Robert