Of course, this is the far future, and things might be different then but given Traveller's military careers are more or less modeled on contemporary practices (enlisted vs. officer division, ranks), or at least on Honor Harrington books which are modeled on contemporary practices, it seems like Scholar careers could also try to make sense. It is not like it is mysterious or hard to figure out.
IRL, physicians are not scholars. They learn the medical profession, which would more properly be put under "citizen". Some go into research, but that's a different career - best handled by a career change.
There is not really a division of Scientists vs. Field; it is more just a question of research method and scientists who do field work do it to collect data or samples to bring back to the lab. There is a division of Industry vs. Government vs. Academia. The first two don't have a clear universal rank structure but the last does. Movement between these is not uncommon. The rank structure is Grad Student, Post Doc, Assistant Professor (or Lecturer), Associate Professor (or Reader) and Professor. You might consider a named or endowed Chair as a step up from Professor. Then there are administrative ranks such as Department Chair, but these are not promotions, but rather onerous obligations which intelligent professors try to avoid.
Any of the different assignment tracks might go into the field, work in a lab, teach, write, and administer. Except in government and industry they generally don't teach. Since most of the skills on most of the tables are by definition "advanced education" it would be better instead to replace that with a table labelled "field" for field skills. Then the assignment track tables can cover the lab, writing and teaching skills.
At the moment, you can make a scientist with the rules, but you kind of have to impose a lot on the backstory for it to make any kind of sense. It would be better to fix it to give it an actual feel of creating a real scientist. And best to get the physicians out of there.
IRL, physicians are not scholars. They learn the medical profession, which would more properly be put under "citizen". Some go into research, but that's a different career - best handled by a career change.
There is not really a division of Scientists vs. Field; it is more just a question of research method and scientists who do field work do it to collect data or samples to bring back to the lab. There is a division of Industry vs. Government vs. Academia. The first two don't have a clear universal rank structure but the last does. Movement between these is not uncommon. The rank structure is Grad Student, Post Doc, Assistant Professor (or Lecturer), Associate Professor (or Reader) and Professor. You might consider a named or endowed Chair as a step up from Professor. Then there are administrative ranks such as Department Chair, but these are not promotions, but rather onerous obligations which intelligent professors try to avoid.
Any of the different assignment tracks might go into the field, work in a lab, teach, write, and administer. Except in government and industry they generally don't teach. Since most of the skills on most of the tables are by definition "advanced education" it would be better instead to replace that with a table labelled "field" for field skills. Then the assignment track tables can cover the lab, writing and teaching skills.
At the moment, you can make a scientist with the rules, but you kind of have to impose a lot on the backstory for it to make any kind of sense. It would be better to fix it to give it an actual feel of creating a real scientist. And best to get the physicians out of there.