It is obvious that the nodemap has been retconned. No trouble with this.
Then, I have some troubles going much further :
- What is retcon, and what is "inconsistancies", "mistake" ? I think even the developpers of FS were not half as fan of their game as we are of their ; and things they didn't care too much about became canon for us.
- What is "mystery that is going to unravel in FS3".
Though, I DO agree that Command not noticing the beam weapon in the briefing is weird. That doesn't mean anything more. There is no one saying "their AA beams are still as dangerous as during the Great War". It might as well have been an overlook from the developper of the mission, who forget to mention this. Remember that if memory serves, by that level, the player has already been facing tough beam weapons, so they might have overlooked the fact that Shivan beam weapons were actually new.
So theories t explain this are speculative. Exactly like saying it was retconned is just as speculative. The only thing we can say for sure is that command didn't say anything about the use of beam weapons.
Still, the most puzzling mystery for me is to understand how you can swear at one another for this. MY GF who read above my shoulder just said :
"Donc il y a des gens pour s'engueuler sur des points mineurs de la chronologie d'un jeu d'action de plus de 10 ans ! Talk about neeeeeerrddds !" (you'll translate
)