If you look at the undead, they haven't been significantly reworked since Heroes 3; the 2nd-level skeletons were changed into archers. This is their biggest change; the rest are minor tweaks, adding abilities, and so on... But it's actually a good thing; now there are at least 2 archers...
[QUOTE=Uke-by_HoMM![Zavulon]] The undead have always suffered from a lack of variety [/QUOTE]
It's just hard to explain to the undead that they should shoot;) And it's hard to find dead archers anyway. Because they usually shoot from cover, and necromancers have to be content with dead soldiers;)