this question basically answers mine. 

https://gaming.stackexchange.com/questions/124442/which-is-better-side-quests-after-killing-the-warrior-or-playthrough-2?rq=1

Though it was phrased differently, and seems to be more related to leveling up a character, it was later answered with "quest rewards from side missions **outside** of DLC's but **inside** of playthrough 1 **do not** scale after beating the warrior, but missions in DLC's do".