Yeah, I think there are several builds which can prove to be very useful where in you dump your dmg+% attribute points and combat skills for the sake of spreading out your combat skills and over-investing in memory so that you'll have a character who's always spending AP on very useful CC/buff/environmental effects
I don't think my testing was as exhaustive as Concarne's from the sounds of it, but I did test (and reasonably conclude) that int had no effect on the damage of a poison surface created by a character in the latest alpha version.
What I did was cheat engine my int from 10 to 42 after hitting lv2 and the damage of a poison surface created by wands and spell were both the same amount of damage at 42int lv2 as 10int lv2
So, perhaps that gives sufficient insight into,
It may also be that we don't have enough skill points to actually make a difference at low level, but there will be at higher level.