I was thinking Reborn could be parallel with B2W2, because that is far enough to the point where Bugsy has enough skill that beating him in the Bug-type master tournement at the PWT is pretty tough. He always seemed to land a stone edge on my Volcarona, but I digress. Someone correct me if I'm wrong, but Black 2 and White 2 are about...5 years after gen 4? So making Bugsy, say 18? (I know they didn't change sprites, so he looks like he is waiting to hit puberty) At that age, him ignoring a 10 year old sister is not that unheard of. Especially if he is off in Unova for the PWT.
As for the Elite 4, I feel like El is going to be dirrectly under Lin, possibly on the same rank as Solaris. How crazy would it be if both were in the Elite 4? Beating that Garchomp at lvl 100 would be like punching cthulhu.
Currently the level cap is 60 after episode 9. If the patern keeps up, that being a cap jump of 5 levels for every gym battle, we will hit 100 in 8 more badges. However, we have at least 9 more types to battle through. 9 because of the 17 types in gen 5, and if there is no replacement for Kiki at the fighting gym. If Fairy is included in the final game, and we have a new Fighting leader, we will have 11 more gym battles.
This made me think there are a few ways this could play out:
We could have a joint gym battle, as is two leaders, two badges in one battle.
We could have the last 1-2 gyms have lvl 100 pokemon.
We could just not get a level cap raise at one gym.
Gym's level cap raises could be cut to 3 levels instead of 5. (which would suck)
Finally, I think Sephora will be the next gym leader we face. After we save her life on the other side of the mountain, her confidence will be shaken by her loss to Lin. Her personality type seems to lack some reason, as well as mercy. She might get angry and want to fight us to regain her confidence. Then give us a badge when she calms down.