I find it interesting that there seems to be a lot room for interpretations when it comes to the characters use of their aspects and classes. Vriska interpreted her light aspect as fortune and was able to steal that, even though light is also seen other things in Homestuck. Maybe it just comes down to each individual?

Exactly, @revolutionaryduelist defines the Classpect System as ‘Hyperflexible’, along with the way SBURB allows customization through Alchemy and gives personalized quests, everything is basically tailored to allow for anyone to basically do whatever they want. Even two people with the same Classpect would have different personality traits and use their powers in different ways, which is why I can usually not answer to extremely specific personality questions, or why questions about powers usually have overlapping Classpects. It all depends on how people Do stuff and Interpret it.

This isn’t even just speculation, either, both Calliope talking about Classpects, and Hussie in his Formspring + Tumblr Days, speak about tendencies and leanings rather than hard, set-in-stone facts, there’s a huge degree of flexibility. This is both a blessing for the Fandom to come up with the craziest of stuff, and a curse as we don’t have a closed set of parameters or limits so we can just speculate about what may or may not be possible.