My AE arc ideas

Ok, so I've tweaked my very first AE mish that some of you may have run. While I was tweaking it, I thought, "Hey, this would be a pretty fun one to make into a 5 arc long story." which is what it is going to end up becoming.

But it got me thinking. And looking. And I came across a fun story arc that was 13 - 15 missiosn long. I plan on making a very long arc. Considering I only have 3 publishing spots open, It'll only end up being 10 missions long. Kind of like a Strike Force. I'm not too sure what I want to do it about though. I was thinking of sticking to the canon side of CoX, and basically have it take place by sending you all over time via an ouroboros crystal. Anywho, the point of this is, anyone got any suggestions or ideas, who knows the CoX lore fairly well? Other wise I'm going to have to put on my paragonwiki cap and get to reading, so any ideas and thoughts would be greatly appreciated.