The icing has improved more color, slick pages etc.
But the dragon really has not changed
It supports the newest splat book.
It clarifies the rules.
It gives fluff articles on game worlds greyhawk, FR
It gives idea articles on castles and stuff.
In fact I think on a 2 or 3 year cycle
newbie articles
In dept articles
Special npc et c articles
and repeat
If you do have the disc of 200 mags look it over and see how many times the same idea repeat either updating or rephrasing the information
Want to make your dragon together look at issue 54, 88, etc
Want to learn how create a world look at issues x, 1xx, 2xx
Now as you grow up and learn more in D&D some articles are automatically fluff. The Gynax view of Orcs may be interesting but I been playing for x years so my view is not the writers view.
Now I just paid for a 3 year subscription. But since my wife has convince me to cull my mag collections I only keep now about every 2 issue. The drow issue was read on Monday and given to the Drow lover on Saturday.