[Plugin: Job Manager] Categories and feeds

Hi there!
You did a great job with the plugin and I find it almost perfect for my needs. It would be 100% perfect for me if there was an easy way to do these two things:

1. Have different types of jobs within a category (or nested categories), so that you could have for example accounting jobs and IT jobs and within them Full-Time and Internships for example.
2. Different feeds for each category, so that you could have several latest jobs list according to the job category. (Latest jobs in UK, Latest IT jobs, etc..)

Is there any easy way to implement these two features in the existing code without much hassle?

Thank you very very much!