Good call on the Chemistry kit! I'll update that and fix it.
As far as "used 3-star badge" theming -- it's meant to be like a badge you earned, like an achievement or like a merit badge. In the Patreon promos, there's a 3-star badge you earn by accomplishing certain things and you get to wear it/use it without it taking up inventory space. Pretend you saw someone with a "professionally trained" patch on their jacket, you may give them more credibility and willingness to listen.