@ Business Kitty aka. Ghost
Looking over your former points, I can see how Sansha himself has a few, for lack of better terms, excuses for the superweapon field. Among those is the fact that he was a Caldari entrepreneur, and so probably lives by the indoctrination of the patriots - being a weapons manufacturer - in that a bigass weapon is a valid tactic. For that matter, it might be an interesting point that Kuvakei might consider it worthwhile to say,open up a wormhole on a planet, to prove his messiah-ness to any followers disillusioned by the incursions.
Personally, I could see Kuvakei being defeated by his own complex, so to speak. Some kind of, Die Hard-style standoff against his personal carrier, which the close-orbiting CONCORD, navy and capsuleer pilots don't know carries a self-destructing supermassive wormhole generator on-board...
More likely, I expect CCP to continue with their mustache-twirling interpretation of Sansha, and have him disappear back into the void to collect his strength after sneering at the empires and saying "nyeahhh, foiled again!" But, at least in that interpretation, your glorious leader gets to live.
I'm eager to see what the player loyalists do, moreover. CCP might keep the incursions running for a time, but I have to figure eventually they'll let them end. At that point it'll be up to the players to decide what the faction's direction will be, which is what I think we're far more interested in.
As per Serps, we're purely black market. We're not doing anything else.
I'm serial about that. We're not doing anything. Just drugs.
Serial.