When you start a new game with magic skill at F you can increase that trait to D if you cast Auspex around 10 times, that makes sense, but it's not limited to once per day, so in theory you can spam Auspex around 2 or 3 days for the price of 2 sparks each (around 20 sparks) and get the D rank without buying the wizard robe that costs around 40 sparks... may be a small detail but does that count as an exploit?
Also, the only way to rise the medical skill from F to D is by wearing the medical gown, but your slave and the slaver sometimes get wounded and the cost to treat them in the medical center is variable, so maybe a "treat wound" option that depends on the medical skill could be added here to save some sparks and increase the medical skill? dunno, just a suggestion