Its not hard to fit the marionette on the lore. After we defeat the Marionette, Priory/Vigil can use that site to train recruits (meaning train new players to work as part of a team that is part of a event that need different teams doing different stuff.
They can use clockknights using holografic skin to appear as molten, aetherblade etc… that will also explain why latter we will not get more code fragments.
In the middle they can have a giant prototype something that they r trying to build to fight the dragons, them something goes wrong and we need cut the chains to take it down, if we fail all nearby things r going to be killed, including us doing the event. They can put like NPC there that will be there supposedly watch us train, or NPC recruits that we need save because theres no time or other reason to evacuate.
For me seems reasonable… what u guys think?