Since the RP has ended, I guess I'll share some things that never got revealed in it:

-The plan was for Adam to destroy the bridge, thus covering the retreat. It was going to be a great scene, with some stuff I wrote and some stuff xenon was going to add to it.
-There was a whole piece of world building that never got revealed. The acid bomb plant was going to originate in the Crystal Islands, a massive archipelago of islands. I wrote a little lore about it in case it ever was relevant. There was also another plant I thought of that was like a coconut tree, except the water in the coconuts was poisonous. I hinted at it once or twice, if you feel like digging through the posts :P
-Second Chance was going to be arrested after the battle (post RP spoilers I guess lol); Adam specifically was going to be arrested at the orphanage. It was going to be a whole post consisting of Adam talking to Isabella and Eren, then the guards rudely arresting Adam. He would ask Eren to ask Areleth for help, leading to the orphanage people going to Capital City where Second Chance would be.
-Michael Fern was going to be revealed as the one who saved Adam's life when the latter almost killed himself while learning how to create the acid bomb. I hinted at that also; this one was more recent than the last one :P

There might be other things also - I can't think of them now though. This was a fun RP and I'm glad to have been a part of it.