Well they can put in something more out there, but it shouldn't draw away resources from laying that good foundation for the entire series.
The wishing well is a good example of something like that. Grim Reaper could still appear, he always does. Only in sims 1 did he initially not appear. But I'd want the Grim Reaper to be more menacing again. He got too goofy and modern.
Could be a bit of humor to him, but let death be a bit scary again, I want it to be dramatic when he appears.
I want to see the dead sim lying on the ground and a loved one being able to beg for their life. Which could require perfect relations with the deceased to have like an 70% chance of succes and less when the relationship isn't as good.
When brought back to life the resurrected sim could also obtain one of the following traits:
-Fear of death. This sim reacts strongly to anything to do with death, might give themselves a heart attack even.
-Fearless. This sim is over confident due to surviving death so is prone to taking dangerous risks that might kill them.
In addition to this, there could also be the possibility that the deceased only gets one day. They could spend it with their loved ones and doing what they like, get some affairs in order. Which could be really bittersweet.
And later in an expansion they can always expand on grim reaper interactions by also letting sims try to intimidate, charm or try to persuade the reaper in other ways than begging. And these could have different results on faillure. Like the sim returning as a zombie or ghost.
