We are having a bit of a debate within our group about characters not advancing out of a career. By the rules once you have spent your 4 fixed advances and 6 open advances on career advances you can get your dedication bonus and then it is essentially time to choose a new career, but this is a bit troublesome. First of all if you raise an attribute to say 5, then you have taken up almost all of your open slots already, so there is little left career related stuff to take, which we are probably going to house-rule as not counting towards advancement.
The other issue is that some career paths are very limited in their options and are pretty short. The real example we are running up against is our witch who has just become a Warlock because he has a very specific talent slot that he looses if he ever transfers out of that career. Eventually he will get to the point that he has nowhere to advance to.
What kind of house rules have people used in these kinds of circumstances?