I believe particular new training courses would be good, especially USAR, Technical Rescue, Fire Ranks, etc.
If Police have the ability to have Sergeant and Inspector Education Courses, Fire should be able to have Crew Manager, Watch Manager, etc.
Some of the other courses you have stated are good as well and would help myself too. Perhaps with some vehicles being added too to facilitate these courses would be good, like, Criminal Investigation Department, Forensic Services, etc.
I can't speak for the fire service aspect of things on this one, but as the content advisor for policing I am keen to introduce CID / Forensics etc in some capacity in the future. I'm sure this aspect of things will happen eventually.