Well I had the idea but several problems appeared :
1. Some maps use special code within those map slots.
2. I have no clue on how to do it.
3. We had too little time to even try it.
I would have joined but after reading the rules, it's clear to me I won't have enough time nor experience to complete a map. Which is a bit sad because the sky in episode 4 looks astounding!
For the next update, there will be something after taking this portal instead of finishing the map. I won't show it here, you'll have to see it for yourself.