i would prefer not, but that's due to situations i have had earlier. aimbot standing behind a thin wall shooting everyone in the head for instance
Well, hackers will get you even without bullet penetration. So that's not a really valid point, eh?
I think, there
should be bullet penetration, as aforementioned, for certain materials. I absolutely support that trend since it came up the first time (after CS 1.6) and found it's way into mainstream. Not being able to shoot someone who is covering behind a wooden fence is just not right. Especially if you're sporting a minigun which should tear that fence to pieces.
That said, I think only some weapons should cause actual damage through something. Light rifles, light & heavy machineguns; assault rifles to an extend. But it shouldn't be really effective. Just some way to
finish off someone who slides behind a wooden fence after taking much damage already.
So a ~50% damage mitigation when shooting through something should be there at least.