By the way, how difficult is it to use magic of a different class when you feel another emotion? Using healing or just plain water magic when you are angry being an example. And I do mean for someone who has already figured themselves out as a person. Is there a barrier, or can they just use it because they know themselves?
Well, the usual case is that a different mood means that something's distracting them from their task. So the tendency is that magic might not be as focused as it should be, and might cause some unintended consequences. If it's something like, being mad at the person being healed (like, say, the patient did something really stupid.) That probably won't affect it as much? The person is still focusing on the person and their wounds after all. (For the most part, it's probably a bit simpler than trying to feel protective all the time when you want to use dark powers. Magic's sorta in-tune with what you want to do more often than what you're feeling.)
Also, I kinda imagined that the gods (and the religions they were from), since they're tied to magic and their elements, always seemed to be somewhat practical in how they gave magic, since they were all patron deities of one or multiple professions and another. The gods were all culturally inclined, at the very least, that they wished for their charges to flourish in the environment they created and shared with them. Whether or not they might have been the type to seem like a mercurial or unfeeling god, they all granted the world a boon through the Mothercrystals.
So if you have a focused goal and you are able to call upon your powers, you will be fine? Alright, but what about if you are unable to focus, such as when you are panicking or fighting someone else? Would your current emotions interfere? Spouting fire when trying to create poison? Making plants grow in a wall instead of earth?
That also gives me a thought about something from earlier. You said that consciously combing two elements (disaster prepper case) was difficult for anyone to do. But if they had more volatile emotions and didn't mean to, could it be achieved? Wall of fire by making a wall of earth while you enraged? You said that if you focus on the task at hand stray emotions couldn't get mixed in, but what id you are too young with too much emotion? Or if you let it mix in?
Hrm, if you're panicking the magic would probably be unfocused. Therefore, you end up with something uncontrollable rather than a different element for most cases, at least unless the person sorta has something like muscle memory where they keep bringing up the same element in a panic rather than the element they intend to cast.
And how you describe the creation of a wall of fire is really how the elements would work. You use your earth sub-element to give the shape of your fire core element. And mixing emotions just gives you an indecisive element. Aka, Aether
Too bad. I imagined the final battle just being absolute chaos as the protagonist's emotions just run out of control, causing mayhem in a spectacular light-show of death. Not saying that couldn't happen, but too bad it wouldn't happen in the way I thought it could. But it is your story and world, and I shouldn't push my thoughts onto you.
So with all this said and done, what is the general geography of this world? Does it take it to extremes with cliffs higher than the atmosphere and ravines that reach the bottom of the earth from the surface, fantasy locals like floating islands being held above with Air Aether crystals located on the bottoms holding them afloat with under water cities of life in the deepest reaches of the ocean, or just general, normal, planet layout with the extremes being similar to earth's?
Well, I wouldn't rule out final boss battles complete with spectacular light shows, but it's more likely going to be a collaborative effort if it ever happens.
As for locales, I can certainly say that floating islands are a thing. So are cities built on the sides of canyons and whole cities built on a giant tree. Expect lots of ruins and perhaps a few very odd locales due to magical shenanigans.
Oh yeah, I forgot Cosmos can also do stuff like bilocation and screwing around with gravity
Well what could go wrong with places like that for background? Nothing, that's what!
I know I asked this before, but do you really have no possible estimation for when you might start this adventure? It seems we have the majority of all the fine details either ironed out or at least touched upon, and it looks like that all that's left for you is character profiles to get organized and locations to sketch out to see what goes where in terms of progression.
I mean when we start interacting with him as readers. Voices in the main character's head seems to be the most commonly used way to have us interact with them. Or do you already have a lore reason with that?