Trying to think of anything unique that hasn't already been mentioned.
OE/1E: distilling complexity into a relatively simple set of the rules that let me play a fantasy character. Multiclassing even if it was a bit flaky. Probably more but my books are unavailable at the moment and I'm too old to remember back that far.
2E: Specialization and clerical spheres were mentioned so I'll go with Skills and Powers. I know, a lot of people probably hated it but I really liked the flexibility. That and I had a blast playing my barbarian that was compulsively honest so that I could get a few more points. I even liked the min/maxing you could do with split ability scores even if it was easy to abuse.
3.x: Feats and minor actions. They got carried away with the action types after a while, but I still prefer minor actions to bonus actions along with always being able to "trade down".
4E: Umm ... something, something ... gee look at that! Time to move on.
5E: The simplicity, and stripping away some of the detritus that had attached itself to previous editions (I'm looking at you, umpteem billion bonuses and penalties I have to track all the time) along with bounded accuracy. Special mention to advantage/disadvantage.
OE/1E: distilling complexity into a relatively simple set of the rules that let me play a fantasy character. Multiclassing even if it was a bit flaky. Probably more but my books are unavailable at the moment and I'm too old to remember back that far.
2E: Specialization and clerical spheres were mentioned so I'll go with Skills and Powers. I know, a lot of people probably hated it but I really liked the flexibility. That and I had a blast playing my barbarian that was compulsively honest so that I could get a few more points. I even liked the min/maxing you could do with split ability scores even if it was easy to abuse.
3.x: Feats and minor actions. They got carried away with the action types after a while, but I still prefer minor actions to bonus actions along with always being able to "trade down".
4E: Umm ... something, something ... gee look at that! Time to move on.
5E: The simplicity, and stripping away some of the detritus that had attached itself to previous editions (I'm looking at you, umpteem billion bonuses and penalties I have to track all the time) along with bounded accuracy. Special mention to advantage/disadvantage.