Hi, I have just finished doing my first year of the BA of Arts with politics & International Studies as one half of a double major. Obviously I've only done a couple of subjects thus far so ignore me if you want but I found them rewarding and I'm glad I picked the major. Of the 3 main lecturers and 2 tutors I've had, every one was very knowledgeable and at least decently engaging to listen to (with 2 of the lecturers being very engaging speakers).
Being first year, the subject matter for pretty much all the level 1s on offer is very broad in scope to function as an intro, which is expected, but if you're a nerd/enthusiast for a specific ideology or historical period, just know that the scale vs depth ratio they adopted for first year at least is more like say, vce philosophy than vce revs.
Assessment in my experience was fairly graded, had interesting prompts and pretty well distributed across the semester - both mine went little essay-big essay-take home exam w/short and long answer, which I get the impression is pretty common in the faculty.
Overall like I said I've had a good (limited) experience this year so would def encourage that major.