I agree with Whale if you want a rolls royce strata you need to do what Whale suggests but most of that is nice to do not must do.
One way to drastically reduce the Strata admin to virtually zero (except for insurance) would be to pass an exclusive use bylaw transferring the responsibility for each townhouse to the actual owners creating effectively freehold townhouses) and then each owner would organize their own maintenance and repairs.
I’ve lived in townhouses in the UK and this is how they were run and so it works. This would only work for townhouses or free standing villas (not apartments of any description). To do this you would need everyone’s agreement and a bylaw written by a strata lawyer.
If you are all owner occupiers you might succeed but just 1 investor will not like this as it puts extra work on them.