Why do you think there is a possibility for locke and key to be renewed? It was cancelled and the creators said 3 seasons were enough to tell the story
Good question! So basically yeah they did say that, but they also ended the show with whispers and all that, and people like to say "that is just a fun way to end the show, a lot of shows/movies do similar stuff", but why do that when Bode 2 seconds earlier said "you guys hear that" ? It doesn't really make sense. What I got from that ending is this: Bode says that because he's hearing something but it's not clear or loud whispers as usual, so he then just shrugs it off cause it's impossible and probably just his mind playing tricks on him, right? BUT, we later hear clear and loud whispers reminding us the magic is still in the "meat world" lol.
I do not believe that is for nothing honestly.. for me it's way more obvious that they did that in case they changed their minds or maybe wanted a spinoff or whatever.
Also remember the snowball sisters? They teased that since half season 2 and ended the storyline in like 3 episodes(?) maybe less, like really? You're telling me that was it?
I did not read the comics but asked a few people on socials about it, and keep this in mind.. they changed a lot of stuff from the comics, Especially the ending!! In the comics the keys do not get destroyed, (I don't remember what happens instead) but that isn't even considered. Kinda weird to me they decided to change it and destroy the keys, I don't have an explanation as to why they did that. But the point here is: they changed important stuff from the comics. They were trying to tell the story from the comics, in their own way. So what they said about "3 seasons are enough to tell the story".. let's just say I don't really buy into that, I could be wrong but I'm pretty sure there's some things from the comics that were not explored in the show at all. Plus it would not be hard to come up with additional interesting storylines, there's still a lot of unanswered questions about the demon world and probably other things. And also: if they wanted to tell the story of the Lockes in 3 seasons, why change the ending? How a story starts and ends are very important things to consider for any show/movie or even book. For me it was kind of open ended, I could be wrong of course but I hope I'm not so that we can see a season 4!
Another important thing to keep in mind is that it was The creators who cancelled the show. When it comes to Netflix shows it's usually Netflix taking these decisions, it's very rare for producers to just end the project like that. I think this holds some importance, not sure exactly how but I have some ideas: wanted to stop the show before netflix could - why? might have been to have more time to figure things out for the show and think about what storylines they could have explored instead of rushing and ending up with a slop, like season 3 ended up being. Maybe they knew a writer's strike was close and didn't want to take any risks. I don't really know, but what I do know is that the show was awfully underrated and did not get close enough to other famous shows on netflix.
I'll end this answer with something I found on reddit some time ago:
"Not certain if it's accurate - but in one of the flashbacks the first locke to make keys says how if the lock and key are made of the same material then it'll have power. The lock and the key of the black door are all whispering iron, and that's how it's able to work. It would make sense that the locks on the doors (in the house) that the keys can use are also made of whispering iron.
So even though they got rid of the keys, the whispering iron is not gone from the world."