A 5 achievement display is a nice idea to add to such plate, steam already does that for all the games you have. But obviously, information should be kept compact here.

For the newest raids, a single achievement can then already be displayed on such plate. And for the sake of it, savage and ultimate raids can also display some special effects to indicate these are harder to achieve (savage showing a glow, ultimate being animated). And on similar notes, extremely grindy gathering/crafting achievements can also show that glow (if dedicated that much, this dedication is usualy enough to beat savages anyway).