Bear with me as I try to articulate my suggestion.
Kings Forest wilderness area has several random encounters that allows the player to use a particular skill (diplomacy, intimidation etc.) to try and achieve a particular result.
Epic Orchard wilderness has Werewolves fighting Silver Flame characters .
There already exist within the game the mechanism to use a skill (diplomacy, intimidation ect.) to achieve particular results. I never really understood why so much of the game play involves very little D&D choices.
Do we really need every encounter to be a fight? What I'd like to see is more content that allows the player to make a skill check in an encounter. The result of the outcome can result in some very interesting game outcomes.
Take Epic Orchard example. Player approaches Silver Flame character and is must attempt to converse within 10 seconds (or they immediately turn red and attack). Bluff to pass by unharmed but can turn red again if pass by them again. Diplomacy to make them permanently friendly. Intimidate to get them to follow you for say 1 min (or small area space) and attack werewolves/undead or even rare boss nearby. Sure they won't make a real difference to any fight (other than allowing you to run away) but it adds a certain D&D feel to the encounter.
Another example could be Temple of Elemental Evil. I'd like to see some encounters with particular types of bandits for instance allow for a skill check. Haggle to bribe your way past them, and maybe even if it's high enough, buy their loyalty for 10 minutes (they can have a charmed icon if stay put or even dominated icon if they follow you).
There is so many possibilities resulting in an effect of some kind that can be catered for any content. You could even throw in Alignment or whether you are alive or dead to either boost or drop your chances if you really wanted.
You get the idea.
For some us, we would really like more game interactions with potential NPC's as part of the challenge instead of the usual non stop fighting spawns, puzzles, or just plain silly platform jumping (omg game platform is so terrible for it I always fume when I have do a quest with one).