Seems like they're preparing a new part of Time Temple.

But the throne does have an owner...
...it belongs to the Goddess.
I thought that would be fairly apparent.

I don't believe that waking the Goddess would result in the destruction of Maple, though.

"If the promise has been broken, we might need to wake the Goddess up from her sleep."
"This doesn't simply concern the Temple of Time but it can affect the entire Maple World and its people. Don't just brush it off that easily."

Clearly, it would have a big impact, but it doesn't sound as dire as ultimate destruction.

Oh so it's fairly apparent that an omnipotent and omniscient woman who's been in a coma since the moment she came into existence, and exists solely in another dimension has a throne on a slab of rock, in our dimension, dedicated to the past, and (as far as we know) nowhere else? I don't see it, sorry.

They did manage to get all the Seal Stones and actually unleash the Black Mage, after all.

No, The Gentleman, a single person, did. Everyone else just stalled the story while he did all the work.


EDIT: Neinheart isn't one of the heroes. He was hostile as pineapple to Aran when he tried to ask for their help, and actually accused him of being the enemy. Only after approval from others did he accept him, and even then, reluctantly.