Inner Sphere Heavy Battle Lance
Problem: The pilot card for Shelley Brubaker is worded in a way that suggest that she was piloting her Nightstar during the Battle of Luthien in 3052. "...Brubaker calmly took aim and brought them down with successive Gauss rifle rounds." The Nightstar was not around in 3052, being a lost Star League design reintroduced later in the 3050s. Though the MUL does not give a reintroduction date, it's a bit of a stretch to think that it was back in time for the Battle of Luthien, and even more of a stretch to think that this is a leftover from the Dragoon's arrival in 3005. And if Brubaker didn't have a Nightstar at Luthien, then the entire second paragraph of the card becomes irrelevant.
I don't really see a way to reconcile this without making major changes to the Nightstar's reintroduction. I'd just suggest rewriting the passage to have the action occur on Coventry or during Bulldog.