Diana Pryde anyone…
To be fair, if she is your example, then, its not going to support your point, LOL
She's pretty much the epitome of the exception that proves the rule.
She's 1 canister short of being a Trueborn herself, and dang near a "clone" since her parents are effectively fraternal twins.
Now that said, Horse managed to be assigned to Front Line Clusters & made it to Star Captain which are both solid achievements for a Freeborn.
Really, other than Star Colonel &/or assignment to a Keshik, that is about as good as ANY Non-Bloodnamed Trueborn could accomplish.