- The standard rules (having a shield changes your defense rating;)
- Shields provide Damage Resistance;
- Shields Shall Be Splintered! (Or some variation of it.)
- Modify the attack roll;
- Modify the attack result (damage;)
- Undo the attack.
I was wondering if my perceptions were skewed by selection bias, or if people really were more accepting of undos or rerolls than I thought. So, the polls. The sample was small, but somewhat consistent: the majority (73% on RPGNet, 52% on The RPG Site) stuck with the standard rules or close to it, but Shields Shall Be Splintered! beat adopting a damage resistance approach. In fact, there was only 1 vote for damage resistance on each forum.
It was sort of surprising that more people answered the poll on The RPG Site than on the supposedly-larger RPGNet, but perhaps that was because I put "OSR/TSR-Era D&D" in the title, and RPGNet has a policy of banning most of the people who play non-WotC D&D.