atlas vs aether

What are you most excited for with the coming reset? Curious to hear opinions/suggestions.

So, I'm pretty new to the server and I saw that in Olympus there are 2 servers, atlas, and aether. What are the differences between these 2? I went into both of them for a bit and the only differences I've found is that aether has more people, atlas is on 1.13.2 and aether is on 1.12.2, and...