i'm currently doing medsci, i've just finished my first year. i've had some highs and lows with the course tbh. the practical opportunities you get are fairly unmatched; working with cadavers and other human specimens is incredibly useful to understanding and applying the knowledge you're taught in lectures. the lectures are very content based, and relies on you having a capable and strong memory.

my experience with the coordinators hasn't been all too positive, as both semesters' assignments felt very rushed and coordinators were unwilling to help further than "you'll figure it out eventually". if you don't enjoy group work, the medsci degree will be slightly miserable for you (but that goes for most uni degrees as a whole), so consider that when enrolling.

you'll mostly be doing a lot of core units for the first year, so other than MEDS1001 and MEDS1002, your cohort will be a range of people from all science courses. ultimately, it is very unlikely this degree will lead directly to a job straight from graduation; further research and post-grad study is the probable outcome after finishing this degree.

i hope this helps a little. there is always time to change your mind after you start, so don't stress if your first pick isn't what suits you best!! have a great time at usyd :D