I feel like I might piss you off, hopefully not but, I’ve read your post about the Rogue and I fully understand it. My question is, how would a Rogue of Light benefit/use their powers?

That heavily depends on the Rogue! Light as a Concept is very broad, Fortune, Knowledge, Fate, Information, Truth, Relevancy, depending on the context there could be a bunch of interpretations. Imagine if Vriska wasn’t actually a power gaming asshole most of the time and actually tried to help others for more than for just her sense of superiority. A Robin Hood-esque scenario stealing Fortune and sharing it across the group, increasing everyone’s Luck rather than just their own, taking intel about the Session and the Alpha Timeline and sharing it with others instead of crafting a plan that doesn’t even end up working properly. And of course putting the group in the spotlight rather than stealing it for themselves.

Remember though that Rogues aren’t ‘good and selfless’ and Thieves ‘bad and selfish’. Rogues can take for themselves much like Thieves do, but they’re more predisposed to working with the Team, and even that doesn’t necessarily mean they’re good. Forcefully distributing Relevancy or Information to those that don’t want it or need it, and putting people in the Spotlight, can be a detriment for some, and ‘Stealing Light’ could also mean learning information someone is trying to keep secret and spreading it around, tearing the team apart slowly. When I talk about the powers of the Classes I tend to focus on the good stuff, but sometimes I leave the bad stuff aside, and given Rogues are the most common class my Quiz gives, I thought it’d be important to remind everyone, even a Rogue can do their fair amount of damage.