There is really no place to go career-wise but that isn't unusual with this type of job. Government consultants go in to projects knowing what is expected of them and promotions usually aren't part of that agenda.
The only other "con" I can think of is the health plan choices with such high deductibles - given that TCG pays 100% of the premium, I don't even think it's much of a con. Once the company becomes larger, I think the choices will be better.