@Kraco:
I'm having a hard time givin' that they will improve as much as you've stated iny our post about shieldings or any other kind of resistance, if not the Professor did somewere/somehow stash a "legacy" to support Billy with proper information/equiment.
The connection between those two feels more than it's portrayed, wich means IF this goes deeper and Billy finds more, somehow Sumeragi will be involved, even having the thoughts of silencing him. Sure, maybe way to brutal.
It would be a nice twist having Billy dead, telling on his death bed that he somehow developed a new suit for Graham. (for the next season, and yes, give our poor mediocorefuckingbestpilot something that his body can handle)

Giving that it's "mostly" a beam saber, fueled by GN Particles, they still have to figure the particles itself. They do need more than a beam saber but I am SO not seeing getting a peak at the current Gundams.

@masamuneehs:
Don't try to deny that Tiera is way sexier than war-scarred Lockon.

Overall, I'm having these annoying thoughts that the Haros SOMEHOW will get a freakin' big role in this series. Well, not enourmus but greater than other characters.
For instance, the memory loss of Evil Haro..
But it also may be just a way to potrait the Trinitys.