versusia has a lot of launch options so i'm not sure if this is the MOST damage she can get off of a dash L but i basically put a regular GBVSR corner combo with 1 raging strike extension after. if you do this exact same combo but omit the dash L it does 10.5k damage, so you can see the new proration rules in action there. 9k is still a hell of a lot of damage from dash light though and she's even left with a cooldown to start another combo afterwards.
generally the biggest damage you can get in gbvsr is off of these anti air close H hits, unlikely to happen but it's good to recognize them for when you do get them... this combo does ~14.8k if the opponent is at 0 BP from the start
