
I already run my investments in a company name, I think I will be ok.
Speaking only of investments outside of super many forget once you hit $45K income you start paying 30c per dollar afterward until the next bracket so selling a CGT asset under the old or new rules makes no difference, most people will already be paying 30% minimum on that gain. It really affects people on low incomes such as retirees the most that won't be able to use the tax free threshholds as a couple to offset $36,400 tax free on capital gain events.
There is a way to comply with the new system and in old age, start a pty ltd, invest via that, get no CGT discount and pay 30% flat tax on income from profits as a non base rate entity, then issue yourself franked dividends whenever you need and use the tax free threshold to get your tax back.