I never really was into G.I.Joe comic (just own a 3 or four issues) - simply I never had the whole story. I preferred to make my own stories playing with the toys
But as long as the figures go, I think that they "jumped the shark" around Armour Tech series (they really COULD be better delivered...) and real downhill is for me the newest series - beginning from the year 2000. Characters are overmade - arms like a bear and hips thinner than Twiggy... (the Spy Troops flint waistpiece is smaller than classic Joe) and somehow I don't like the concept. Apart from a few GOOD ideas and remakes - old figures with remolded heads - they look well
And - one thing that come to my mind right now. G.I.Joe always reacted quicky to the newest trends and fashions. TMNT? Here you go with Ninja Force and similar. Star Wars Remastered? Launch Star Brigade (it's a simplification, but still...). So I would say, that taking whole G.I.Joe series under scrutiny, you'll have a full view of what themes were in fashon - I think there's no other series like that
__________________
My weekly TOP5:
The sacrifice of innocence the hailing of the gun
My way was death and madness, now let the Tower come