In DD maxing Wisdom would give give you an extra level, possibly 2 if you used Ressurect a lot to re-kill creatures. Wisdom - is it worth the skill points?

In BD you need 4 times the skill points to get the same effect (twice as many to get the same bonus, required for each character). Since you finish the main game around level 30 (compared to about 50 for DD), you will not get an extra level in BD. However, you will level slightly faster, and since you can unlearn skills, the points would be better put into Wisdom than sitting around unused.