@MLBS hi, iba2 kasi ang case bkt ng-aaral dito, i know few people na nasa list ung skills nils pero less ung points or gusto ng mas mataas na points, meron din na they are hoping to find an employer who will sponsor them, meron din wala sa list ung occupation nila kaya nag-aaral dito. it varies kasi ung reason.
in your case, if you want to gain more points at plan mo magstudy go ahead but you need to be strategic at it depends kung sang state mo plano mag-aral.
with the current point system if you live and study for 2 yrs sa regional area you can get extra 5 points aside dun sa 5 points na makukuha mo for finishing 2 yrs of study in australia.
also note that some smaller states (SA, NT, Tas, ACT), they offer a separate pathway of state sponsorship for international graduates who studied in an educational institution sa state na yun. Some only require 1 yr study sa state and if you meet the other requirements you can apply for SS straightaway. Technically, you can get an invite with 60 points. Did you know what I mean?
So I would suggest if you will go study in australia, choose a state where you will have an option to get state sponsorship.