Probably just my love for the old Warcraft 3 game as well as a few recent interests that gave me this idea, but I just thought it would be awesome if there was a sort of hero/unique-esque unit that you could create somehow, maybe through one of the faith buildings perhaps? Like the altar building in Warcraft 3 gave you a selection of a couple of different heroes.
I actually quite like the idea though of it starting off just about the same as one of your regular newborn peons and maybe even you can manually have it go do various tasks like fetching sticks preemptively for your fellow gobbos, working on making weapons, all of that kind of things you can do with any other goblin really, but perhaps doing these tasks would steadily make your unique goblin/hero goblin stronger/level up? Perhaps even you could include a tree of various skills that the goblin could learn depending on the kind of jobs you have them do, like if you have them be a priest they could pick up various health/buff/blessing related abilities, if you help build weapons or be the war chief you would get offensive-style things, if you personally have them build buildings perhaps you could get buffs for them and other goblins that speed collecting resources, building things, crafting stuff. I wasn't really thinking anything too extreme either, just a bit of a special goblin sounded really cool in this generation-style game, you could try and get as many of the various different skills learned in their life-span as you want, or you could focus on trying to get 1 or 2 of the skill trees maxed out before they eventually (I assume with the age system) pass on, maybe there could be some kind of 'hall of heroes' esque way to even display them, like some systems on hardcore games that keep track of your characters that have died in game.
I would certainly love something like this involved, just as a personal love from other similar games that I already like this just about as much, as well as having a unique thing you could directly influence, not sure if maybe something similar is perhaps already in the works/planning, but yeah. Lol Just felt like sharing the idea.