My friend was in an Alumni of his previous Uni, apparently a lot of people came back like you and never renewed. if it is for retirement then I would understand. they just let it expire without doing anything which some of them did.

But if it is still young I am thinking very wasteful. But per visa is AUD 410 per year renewal. assuming you have children and a spouse could go all the way up to thousands a year.

I am in my dilemma if I should renew it since my business expanded exponentially in the past 2 years. Like what will happen if i wanted to move again in maybe 10 years time when my kids grow up? Will it affect the application. since it was expired once.