| JustKim |
The inserts I get the most good out of are monster tokens and map tiles, like the old ones from Ron Shirtz. The monster tokens made from an issue's artwork helped sell me several issues of Dungeon, and I think it's be great to see those in Dragon as well.
What I don't use are artwork posters and battlemaps, especially world maps. The larger a map, the more likely I won't be able to use it.
Another thing that's important, if you're going to make something that needs to be cut out (Monster tokens or partial maps), it's important that things line up on both sides. If I have to ruin one side to use the other, then it's not very useful. Monster tokens could also benefit from being labeled somewhere, so I don't have to go rooting through artwork to figure out what I'm looking at.