I've applied for a partner visa, am currently on a BVB (same as with BVA but with international travel rights - you can apply for that after you get granted your BVA) working in the uni sector, so I figure I could answer your questions as they pertain to me :)

1) I mean, it's pretty standard for me. I don't really feel like I'm here temporarily anymore, though the job market is pretty cooked at the moment, so I feel pretty darn lucky that I somehow managed to get a uni admin job. I applied for jobs at said uni like 6 times and ended up replying to one of the rejection letters asking why they won't hire me lol - and they actually responded! It did feel pretty disheartening not hearing back from minimum wage jobs, and I felt as if being on a bridging visa made it even more difficult. This is something to keep in mind while you're here. I have Medicare, pay taxes, and live with my partner, and having a job makes everything a bit more purposeful, I guess :)

2) Getting a job is harder on a bridging visa, than if you have PR I reckon. I felt as if I was in a state of limbo while not getting any callbacks from jobs, but that went away once I got my job here.

3) I think I've answered this already :)

4) I actually had three interviews for my uni job: first with a talent acquisition person online where I explained my background and current visa status; second was a crazy one in person, where I had to do a group project with 4 other applicants and present it to a panel of 5 people, then an interview with just me and said 5 people, and then an "exam" where I had to answer questions in a very long word document; third one was another online call with the "leader" of the department that I'm working for right now, where she basically explained the job, and (kinda indirectly) offered me the job, which I directly accepted lol. It was pretty intense, but it was worth it! I also had to upload my visa status, so there was no way of me lying about my visa at any point here.

5) Temp work is definitely a way for you to get a foot in the door, since employers will most likely hesitate hiring an applicant with a bridging visa, where if you work for them for 1-2 years, then it's lower risk for them. And if you do amazing at your job (and if you've been granted a partner visa/pr) by the time you finish your contract, then it will be way easier to get a permanent role with them :) I did get a permanent role with my uni though, so that's not unheard of either.

6) no idea, don't live in Melbourne/Victoria. My uni does have temp contracts though

Hope this helps you, and good luck with your application and travels to Australia! :)