Well, I tore into this on MMN, so for the benefit of RPMers I'll copy/paste my comments and criticisms.
X^X AD
Barrel Caskett is born.
->
X^X AD
-Teisel Bonne born
-Bluecher is born
I'm not sure by what grounds Barrel Caskett is separated from Bleucher (Bluecher's obviously in better health, but you never know), a source on that would be nice. And I SINCERELY doubt Teisel was born anywhere near the same time, much less before, Bleucher. I know the gray hair makes him look old, but despite his appearance Teisel is of the same generation as Tron, being her older brother (Tron being 14-15). Bleucher was journeying to Forbidden Island with Barrel 30 years ago, what do you suppose Teisel's status was 30 years ago?
Maybe he was alive, maybe he wasn't, no way was he old enough to go adventuring.
X^X AD
-Tron Bonne born.
-Roll born -> Barrel finds Data and Trigger's reset form inside Nino Island Ruins. He names the baby Rock as a pun on his granddaughters name. Trigger adopted by Barrel. -> Roll's parents enter forbidden island. (10 years before Legends2)) -> Roll's father, Banner is saved (by Yuna?) and ends up at Yosyonke, Banner lost his memory and takes on the name Joe, his arm is replaced with a mechanical one. (10 years before Legends2) Roll's mother Matilda near death, is saved by Yuna, she repairs Matilda's body but is forced to use it as her own. (10 years before Legends2)
For organization's sake, wouldn't it make more sense to separate all the 10-years-before-L2 events into their own category? It's odd listing all of that under the same entry as the births of characters who, at that time, should be in the 4-5 range.
X^X AD - Legends2, "Episode 2: Great Legacy" (The year changed since Legends1)
Unless the Japanese version is different, you may want to specify "next calendar year." "year changed" could mean multiple years, but Roll refers to the events of L1 as last year.
There is a high probability that the blue hero was MegaMan Trigger attempting to destroy the System. Juno's actions are not in violation of orders and thus not Aberrant behavior. Juno has met Trigger before, he knows of Trigger's status and knows how he should look, still he acts hastily in favor of terminating his superior who has lost his memory in the reset. Eden is unaware of Trigger becoming an Aberrant, Juno may or may not be unaware. Battle between Trigger and Juno might be the reason why Juno is sleeping in the main gate and not actively monitoring the carbon population, though one must conclude in that scenario that even Trigger failed to stop Eden from killing the carbon population on the island.

Juno is unaware of Trigger's aberrant status. He notes that further action from Trigger will go on file by Eden and tarnish his operating record. If Trigger was aberrant, his actions against Juno shouldn't have any bearing on that. Furthermore, Juno notes that Trigger is under the direct command of Mother. Again, if Trigger is aberrant, this is no longer true. Repairing/restoring an aberrant unit is also unheard of within Legends, making it very odd for Juno to be seeking a backup of Trigger's memory with Eden. Yuna states within L2 that as a Purifier, Trigger's duty was to "hunt down and destroy all aberrant units." Trigger's memory loss may be news to Juno, but if he knew that Trigger was aberrant beforehand, he should not be attempting to restore it. He has every right to terminate Trigger right there.
Or rather, he would have if not for one little thing. Trigger, since becoming aberrant, is in possession of the Master's genetic sample. If Juno knew this, terminating Trigger and risking its destruction would not be acceptable without authorization from
all active Mother units (Sera was not to destroy it without consulting Yuna in L2, if not for the fact that Yuna was no longer recognized by the System). But he attempts it all the same after Eden is activated. Talk about tarnishing one's operating record. Juno's first duty should have been to retrieve the genetic sample while Trigger was disabled, and he walked away.
Also, Juno's sleeping was planned. He himself expected to wake at a particular time, Trigger merely woke him earlier than expected.
Finally, Trigger's word carries a lot of weight within the System, Data being able to interrupt Eden's command and DELETE (as opposed to quarantine?) Juno's backup data in Trigger's name. The topic of whether or not Juno is actually aberrant is never brought up, Trigger's word is accepted on that point. Juno's justification for attacking Trigger is that Trigger is suffering memory loss, not that Trigger took any inappropriate action.
For all these reasons, the painting in Kattelox museum most likely does not depict Trigger. Rather it's an easter-egg pointing at the recurring theme of a blue armored hero. Such a battle against Juno took place, that in no way means Trigger was the one to fight it.
-Alternate English Version Event: Barrel finds Data and Trigger's reset form inside Nino Island Ruins. Roll demands baby be named "MegaMan," after her favorite videogame character, despite Barrel's wishes. Trigger adopted by Barrel.
You may want to have japanese and english equivalents near each other.