I went ahead and merged it. I think the error it reported was a merge issue, the json files frequently have this problem. The best way to avoid it is to pick a random or category-based spot to stick your new content instead of at the end (for example put the mail carrier after the cop). This makes it less likely that two different people edit the same spot in the file, which is what causes conflicts.
In addition to that, there were some commas missing in the profession definition, but I just fixed that up in the merge.
It’s ok to have items only spawn with a profession, but if you think of somewhere else that it would make sense for those items to appear, by all means add them.
Thanks for the contribution 