Do you remember the "concordance" of artifacts in 4th Ed? Maybe when players were roleplaying rightly there was a better concordance with that vestige, allowing to unlock some extra bonus. I suggest rewards and positive stimilus are more efective.
Other point is if maybe 2nd Ed Shaman could be...
I have read something about being Fortnite like a future videogame-store app. Maybe WotC could publish a remake of D&D-Beyond VTT. Let's imagine players creating their own interactive-stories with the characters of Dragonlance. (Would be now Tas a pet? And Flint a hired companion) Or other using...
My opinion this is very good for D&D because like this it earns a lot of brand power. And creators can find a source of inspiration for their own works.
Could you imagine Dark Sun in Fortnite (like a survival), or LEGO: Spelljammer like a trade simulation?
OMG! I stopped to play Fortnite...
The 3.5 Tome of Battle showed some fresh and new ideas for the lore/fluf the experience would teach how it could be better.
The binder and the truenamer were designer to be at-will casters. Each vestige was like a mini-prestige class you can change when you wanted but the truenamer only could...
"A lot of time ago, a crack commando unit was sent to an infernal plane by a rival celestial court for a crime they didn't commit. These souls promptly escaped from a maximum security stockade to the Feywild underground. Today, still wanted by those celestial power (and some infernal dragons)...
What if a player chooses a "spellthief" but the DMs uses enemies without magic powers? Or the boss was a "class" with special game mechanics like psionic or incarnum soulmelds.
I asked Gemini PC species with a touch of new weird fiction (but for all the audiences):
The Calligraphers (Scriptos)
Humanoid beings whose skin resembles hardened parchment and is covered in constantly shifting ink tattoos. They are "living libraries" that are not born, but rather written...
A 3PP published KPop hunter like a bard subclass.
Falling from an airplan? Easy, "feather fall" in the last minutes.
Some times if you want to adapt superhero-style characters to D&D these have to be "nerferd".
Even if true Athasian deities are totally KO there is some opened door for the divine ascension of Athasian mortals, maybe the PCs or some character from the novels.
Some players could be interested into being divine spellcaster in Dark Sun, even if this was against the "rules" because it would...
In the last years there are several titles where the players or main characters face anomalies, creatures or monsters that can't be easily classifield (they aren't biological mutants, fiends, aliens or elemental). Sometimes the simplest description is modern art statues that come to life (like...
I would be interesting a ghostwalk campaing played as a "reverse-dungeon"+"tower defense". The PCs are ghosts, but the goal is the survival of the tribe/community in Duskmourn. The ghosts could explore something like a "mirror plane" with monster anomalies what can eat incorporeal spirits.
There is also the possibility of a living god from a wildspace could be a "vestige" in other. For example in Krynnspace the deities from Greysapace or Realmspace would be like "vestiges".
Other point is maybe some "vestige" isn't a dead deity really but an "aspirant", some ancient dragon or...