Ok with the update we bring new theories. Here is one.
So with all three plans that are being put in motion. I believe they will all come together. I mean think about it. They have to find calliope because she is the only one that can use the Weapon that Vriska and Tavros are looking for. How I got this goes back to the very beginning of homestuck were it states that once you have set your strife specibus(can’t spell but you get the idea) you cannot change it. The only thing that has been mentioned that could kill lord english is a white cue ball bullet shot from a gun. The same gun Calliope uses! so she has her strife locked and ready to kill Caliborn. so they HAVE to find her.
and of course the ghost army has to help as a distraction… or something like that
but I like how this is coming together!
Just watch as hussie completely changes this just to troll us. :0