They also have the surgery skill a 4 and title to the max, and skill up to 4 (and in some case 5) all across the board.
Simple. Can't be done.
Title to the max? Unless they're Joffrey Baratheon, the mad child-king, nobody is gonna acknowledge them until they're at legal age.
Also, a title has to have some substance. If they're teenage nobles who spend their time fighting across the galaxy in mechs, they can expect to have zero political power and influence. For the hack of it, make them the rightful ruler of nobody-gives-a-frakistan: a jewel of the Terran hegemony in the star league days.
That is now an uninhabitable black rock.
In clan territory.
You can't have skills over level 3 without training with a master of the field. Surgery 4? Who are they supposed to be, Doggy Howser?
Ask them to explain, in detail, how they think their teenage characters reached those levels. Without also acquiring basic skills like driving, protocol/affiliation, swimming, interest/porn, etc...
When dealing with minmaxers, the guideline is to never give them an inch. Always hit them in the "minis"; literally, and metaphorically. They sunk their points into being legendary mech jockeys? Make sure they spend 99% of the time outside the cockpit. Heck, get rid of the mech altogether; make an adventure out of it. Drown them in red tape, as vengeance for not putting points in administration, and career skills.
Send them into the shed with some sharp objects: let them acquire some "lost limbs" traits, if you know what I mean. >:D
I'd even impose 25%-50% penalty on their starting XP. A character hitting the ground, without going through stage3&4, is suppose to be a helpless toddler; uneducated, and with zero understanding of real life. No future, no hope. Unqualified for anything bigger than "paper or plastic". Decide all those "uber" skills, apply only to video games, and impose penalties on "real life" application.