Some members have mentioned that standard skeletons and zombies are yesterday's news and would like them either removed or overhauled. Here's my suggestion:
Once the adventuring party reaches a certain level, consider making 1 in 10 (or 1 in 5) skeletons come with a built-in "Skull Trap" spell. You strike it once, and it detonates like the "Blast Skeletons" in IWD. But they look like regular skellies so you can't tell them apart.
And make zombies SPRINT, DayZ style.
Problem solved.