Lolo hired Ilberd to kill the Sultana. Both fought back, when they were caught and died. End. Nobody gives a **** about Ilberd. Most people of Uldah for sure do not even know him.
And sure, there may be more heads, but they don't got the position to take over Uldah like Lolo did now.
And why should anyone assume, that the Scions would take over Uldah? The Scions would not do anything like that. It's super pointless to even think in that direction. They got nothing to do with Uldah, they just risk their lifes to save people. That's all. No politics.
Sure, maybe people could think that it may have been a plot of Raubahn. but really: everyone saw how much he loved the Sultana, many guests saw, how the message of her death enraged him. And as long as Raubahn would not declare himself the leader or even try it, it would also be no coup in the slightest. The goal of a coup is, that the putschists come to power. As Lolo did now...
Image the reaction of the people, if the Queen of the UK is getting murdered and the Prime Minister gets the sole power in the whole land and is blaming that to... let's say to Interpol. And then imagine, that the Queens and the Prime Minister are getting murdered and his conspiracy is revealed by Interpol, that he killed the Queen to become the sole leader. What makes more sense.
The Crystal Braves are not even close to being something like the NATO. The alliance between the three states is something like that. So actually Raubahn is more of a NATO leader...
Ilberd is just some commander of a bunch of mercenaries. So more like the 2nd in command of blackwater/academy.
Alphinaud was still the commander, it does not work this way, that he can just take over power like that in mere minutes. This actually just proves Ilberd's treason.
Raubahn killed one of the assassins of the Sultana. That would be the story if we wouldn't have fled. Now Raubahn of course is a murder, just like us. And the real murder is the king of Uldah and can do whatever he wants, for example invite the empire. Sure, this may not happen, but it could and we just fled to save ourselves and make this possible. We played with the whole fate of Eorza this way, just because we are suddenly cowards.
If we simply would have stayed for a trial, it would have all been a much bigger problem for Lolo. The people don't trust him. They trust us. They see, that we go not wish for power over Uldah (how anyway?). But he does. He got by far the biggest motive to kill the Sultana. We got none. But we fled. And even if people may think, that we are not guilty of murder, we are indeed guilty of having marooned them. Everything what will happen now in Uldah is at least partly our fault. We could have done something. We could have at least tried. But we just let them win. Everything. Everything worked out pretty perfect for them. For sure better than they could have hoped for.