If you read Jayce's lore, he already made a first move, which could lead to a war IF Victor wanted to create a war (which I can see happening)..which is why Jayce protects the city. Because his actions drew a lot of attention from dangerous enemies. (Which sounds like the start of a potential war, and would be epic to see happen, as everyone gets new skins for upcoming battles and they would have pretty big events and maybe some Lore add-ons and touchups similar to what they did with Trundle when Lissandra came out.)
If pitched right, I think it would go through. And if done right, I think Riot would gain a lot of money from all the players wanting new skins for their champions and getting hyped over new things happening. Much similar to when the whole hype over Udyr's new skin, and the war between tribes when Lissandra came out.