Well some of the best campaigns revolve around dead gods, there was BG and there was some planescape stuff. So the question here are:
Do people besides the deities priesthood notice something is out of place?
If they notice, do they make the connection?
How did the god die? Was it some rival for his portfolio? Then he might be replaced by his killer.
IS it possible to ressurect the god?
How are the PC involved in any of the above?
Be careful here: 2e allowed a priest to go for a while without spells, but even Goldmoon did get her blue crystal staff, How that works out in 5e is unknown territory.
Do people besides the deities priesthood notice something is out of place?
If they notice, do they make the connection?
How did the god die? Was it some rival for his portfolio? Then he might be replaced by his killer.
IS it possible to ressurect the god?
How are the PC involved in any of the above?
Be careful here: 2e allowed a priest to go for a while without spells, but even Goldmoon did get her blue crystal staff, How that works out in 5e is unknown territory.