The Scrappy: Of the Excellence's many frames, the one deemed most pointless is the Diver. As the name implies, its primary function is aquatic combat, but given the small amount of scenarios in Reversal where terrain is water-based and it becomes useless and ineffective against every other terrain, there's almost no point in ever using it; even the Striker frame performs moderately well underwater (not to mention, for underwater necessities, Neo/Shin Getter 3 does the job better and it can switch into other forms once the temporary water problem is finished). It comes as no surprise that the frame is Adapted Out for Original Generation.
In one of the early scenarios for Reversal, the Excellence's frame gets destroyed while Taking the Bullet for Dendoh. The protagonist's team launches another frame from the battleship, allowing him/her to stay in the fight. Players can't do this in the game, and can only change frames during scenarios by heading to a battleship to dock and manually choose which ones to sortie back out as, thereby wasting a turn. This undermines the whole point of a Humongous Mecha having access to multiple frames for multiple situations. Rectified in Original Generation by turning the Excellence into a Transforming Mecha capable of switching its frames as players see fit.
She's Just Hiding: In Original Generations, Fiona delivers some sort of "farewell" death speech to her brother and friends in the prologue scenarios, making it apparent she might be killed (moreso than Lamia Loveless in the "2.5" bonus segments). It took one trailer for Original Generation Gaiden to ruin the suspense, hence the lack of spoilers.
Wangst: Fiona's Reversal counterpart usually had her pull this with regards to how she thinks she's a hindrance to Raji Montaya and his research.