Henadic Theologian
Legend
What are you looking forward to more Vecna: Eve of Ruin or Quests from the Infinite Staircase?
Staircase.
I enjoy the Vecna preview adventure very much, but my faith in WotC's longer adventures is quite shaken right now by Turn of Fortune's Wheel and Phandelver & Below: The Shattered Obelisk (especially the former, which is one of the very worst official 5E adventures imo). I'm quite sure that at least 1 or 2 of the adventures in Staircase will be fun & useful to me - I already like the half of Tsojcanth we've seen, so that seems a safer bet.
I mean forcing Vecna into every setting no matter if it makes sense or not is iffy.
This doesn't bother me really because there is an entire generation of players for whom Vecna is the creature in Stranger Things and MAYBE the BBEG in Critical Role campaign 1 (which ended 7 years ago). It's not a character the vast majority of today's players have ever encountered in-game.