That being said if I were to modify D&D or something like that I would start by making defense rolls basically a saving throw with armor either adding a bonus or perhaps reducing damage. Conceptually I’d look at Ability Checks as active elements (when the PC’s are trying to make something happen), and Saving Throws as passive elements (when the PC’s are trying to prevent something from happening).
At least that’s where I’d start.
John Lewis recently posted…This Week In Roleplaying – November 14th, 2014