I agree with CyberSarkany about the Crono/Miguel controversy, but in all cases I still think it's too simple to send Crono and Marle into hiding. Even if they couldn't defeat the entire Porrean army, going into hiding (for years!) sounds much more like running away than an action to protect their baby. If they really wanted to protect their baby while continuing to fight, they could have entrusted him/her to a lot of people (Melchior, Crono's Mom, anybody from Guardia Castle, etc.).
Well, we all know that Porre eventually invade, so instead of risking having this rule applied to our game:
Maginot Line Rule
It is easy to tell which city/nation is the next conquest of the Evil Empire: its streets are filled with citizens who brag that the Empire would never dare attack them, and would be easily defeated if it tried. (This smug nationalism always fails to take into account the Empire's new superweapon.)
Why not twist the event a bit and make the invasion actually surprising to the player? i.e., why not say that Porre were actually the good guys in the war? This would explain a bunch of stuff and contradict nothing in my opinion.
Imagine if Guardia were the
bad guys, what would Crono and Marle have done? Imagine if there was some sort of anti-Monarchy rebellion in Guardia with support from nearly all the population: would Crono and Marle try to protect the king? probably, but would Crono and Marle draw swords against their
own population? I don't think they would. I believe they would prefer to try some diplomatic talk rather than to go slaughter Fritz and compagny.
With these popular uprisings, the Porreans would appear as the
good guys. Opposed to the age-old monarchal state of Guardia would be Porre, the modern state driven by trade and liberalism (I say Liberalism because the Viper Clan from Porre actually ruled El Nido, it wasn't a "personal property of the Emperor of Porre" or anything like that).
Thus, Porre would ally with the rebel Guardian population to help fight the monarchy. The
only real massacre would be committed by the guy who stole the Masamune, but Porre itself would not touch the population (of course, since they're allies). On the contrary, they would protect it and fight back the Masamune stealer.
Crono and Marle would help defeat the guy who stole the Masamune. They would point at the massacre he committed to try to convince the population that Porre are just a bunch of evil imperialists, but the population would point at the fact that the guy would never have committed this massacre to being with if he hadn't been driven mad by the Masamune, a weapon coming
from the Guardian monarchy.
Unable to prevent Porre from effectively assuming control of Guardia, Crono and Marle would be forced to either go into exile OR resort to accept the popular movement so that they could keep on living in the country. The latter choice is notable because that's probably what Lucca did herself ("what's done is done, I should take care of all those orphans now instead of drawing weapons again and risking another massacre"... something like that). This would explain why Lucca stayed in Guardia after the fall and even continued to buy goods from Porre.
I don't think there's anything in the games which contradicts this point of view. It explains what Crono and Marle could have done, what Lucca did, and even why Guardia became a sovereign country again by 1,020 AD (Porre assumed control for some years to help organize things, and they withdrawn from the country when the new government was ready).
Norris' Frozen Flame quote may also point towards this theory (Porre is menaced by other major countries). Radius' comment about Guardia having once been a "peaceful country" could refer to the times before the monarchy became unpopular, and could mean that the new country is still not totally stabilized. Radius claiming that Porre are bad could be attributed to the fact that the Acacia Dragoons became opposed to Porre years after 1,005 AD. And of course, by 1,020 AD Porre became effectively a little militaristic, but that's 15 years after the incident with Guardia.
The only thing to gap is to find a reason for the population to rebel against the Guardian royalty, but it's not really difficult. Stuff like that happened a lot of times in real history.
So... comments?