True. The High Republic did get a brief mention in Jedi Lost:
Aside from that, Jedi Lost was written by Cavan Scott... Who is also one of the key writers for the High Republic event.
So Trennis being referenced likely wasn't some random ass-pull. She'll almost certainly abandon the Jedi Order at some point in this event(and possibly turn towards the dark side)... Perhaps as a result of an encounter with the Drengir?
"I am tired of Earth. These people.
I am tired of being caught in the tangle of their lives."
I don't get the complaints about the lightsaber rifle. I mean, we don't even know for sure if that's what Marchion Ro is using, it's just speculation right now. And even if it is, I don't see how it "devalues" a lightsaber. Hell, the Death Star was basically just a giant lightsaber gun.
If Marchion Ro did make Loden Greatstorm's lightsaber into a blaster, that doesn't devalue the importance of the lightsaber to Loden. It's a form of deliberate disrespect toward Loden on Marchion's part, turning the sword of a peacekeeper into a weapon to spread fear and destruction. I don't see a problem with that as an action taken by a villain. And I'm sure a kyber-powered blaster would be an ideal weapon for the leader of the Nihil, giving him a blaster that wouldn't be nearly as easily deflected by the Jedi he's up against.
Given we have seen Jedi use lightsabers to power rifles and ships, it kinda is. I wasn’t saying that Ro was devaluing it, that was just a general statement. Also the DS used a component of a lightsaber, it didn’t use a whole lightsaber to power it.
Now you’re right it’s speculation, but I guess we’ll see.