I think something that we all forget about is that we are writing collaborative fiction here, and through that, I would imagine most of us would try to have a basis in proper story pacing. One of the marks of good fiction is understanding how a character's story should come to an end, even in stories that are heavily based in conflict in war, see any Star Wars movie for a prime example of this. If we were just killing off toons without rhyme or reason, that would be a poor story. There's a reason why people get turned off of RP spaces where permadeath isn't something you have a say in, there's a reason some folks can't get into GoT. Investment and proper storytelling, along with respecting your characters, goes a long way into writing death.
Should every character die? No. Should ever story end with character death? Hell no.
We are writing fiction here, not a tallymark machine of how many people we can drop.
If toons not dying is a problem, that's a mark on the writer and how they tell stories, not on the site or the ruleset.
For me? If Ravraa's story one day demands his death, he will die. If it doesn't? His story will still end one day. I don't think shifting rules will fix this.
You're right, death is an important part of the story, but only if it's handled with tact and with proper narrative pacing.