It would be interesting if a shield could have 1 hit box for damage and a second, larger hit boxes for clipping (people moving through them).
I'm fine with someone having a 1 shield skill and a small shield and getting hit around the shield easily, but if I'm holding up a giant huskarl shield, people should have to go around me by at least the physical width of the shield. Two huskarls in a narrow hall should be able to completely block it.
Earlier today, Fallen was practicing shield wall techniques and I never had any trouble just walking right through them, even though their shields had no visible gap between them. You just push into them and you're through.
Course I got mauled on the other side but the point is I shouldn't have been able to just walk through their shields.
We should get on a deathmatch server or something and FRAPS some videos of it.