Changelings don't copy traits

[BaneOfGiygas]

What if lings were able to pick and choose which traits to have "active?" The traits of whoever they are disguised as will still show up when examined but they may not be the actual traits that are active.

On the one hand, the idea of changelings being able to adapt the individual strengths (and weaknesses if they feel like it) of the people they absorb is an interesting concept. On the other hand, I feel like there should be some form of counterbalance so you don't have changelings with every single positive trait in the book at every possible opportunity. Perhaps force them to keep the same balance of points as one would require when choosing your traits normally? Then again that sounds like absolute hell to code in, so possibly not.