Though I'm not certain how they are going to rebuild the gunpla to survive a technique the master builder Iori's model couldn't take. But maybe the materials have developed since the time years ago when Iori built Burning Gundam.
I agree. However, what this means is that somehow Sekai's been able to go over the limit of gunpla when no other person has been shown to before. Even the Shia was able to tune Build Burning better than what Iori did.

I loved the whole sun rising and arms burning thing.


I'm a little disappointed the new girl had absolutely nothing to do with Reiji and Aila. I don't know why she had a design like that when she was a total unrelated stranger, after all. Feels like trolling. But then again, it would have been quite hard to make her related with only a 7 years interval between the shows. At least I can keep hoping we might see Reiji, Aila & a cute little daughter appear before the end...
Shia is their daugher spiritually. Or just a cute little Aila who didn't grow up starving.