Perhaps it would help if you made it clear, which can be done easily by stating: 'these are not things IRCC looks at for the PRTD application but you should keep in mind.' Or something similar.Never said it was related to retaining to PR but given that OP mentions having returned to Canada multiple times and worked for 6 months and filed taxes they should be aware that they should contact CRA so they aren’t receiving benefits that they will have to repay with a penalty. If they do return to Canada it is in their best interest not to end up with a large repayment amount to CRA.
The things that 'need to be done' in general are not the things that need to be done to retain PR status, which was the question at hand. Tossing in all the things you want people to know they've done wrong (however pure your motivations might be) muddies the waters without the proper context.