My son was rear facing till 12 months. I also never used a booster without a harness. Our car now has raised boosters for kids. And even though both children are past the age of needing them they both use the boosters as in the car manual it is recommended till 12 due to curtain airbags and overall safety. People think I'm crazy. But I don't care. I saw a fb survey on safe n sounds page the other day. They are looking into the rear facing seats for extended periods. So maybe te manufacturers will be the ones to change before the regulations do.
And from a purely marketing perspective if SnS do this they will hold the market. As I know plenty of people who would purchase a seat like this if it were available.
Safe n Sounds will be the first to release an ERf seat, they know first hand what will happen if they don't have one ready before any regulation changes happen.SnS are also the only ones with the exception of maybe Infa that are responsive at all to campaigning from the public. Most manufacturers I have had contact with don't want to know and don't care, but SnS are willing to discuss. They also know the push is getting bigger for ERf seats, and they are taking notice. There are big financial hurdles when it comes to making an ERf seat that will comply with Australian standards. If this wasn't such a big issue I think SnS would already have one released. They want some changes in the design standard to give them more flexibility so they can go ahead. Although if they get their change I think the first ERF seat will only RF for up to a 3 year old. Our top tether plays a big role in this too I think. If they could use a different tethering style it would be easier to produce an ERF seat. It is hard to get a straight answer from anyone though, there is a lot of buck passing.

I think you're absolutely doing the right thing having your kids in boosters still. When you say you have raised boosters, do you mean factory boosters with your car, so a Volvo or do you have half boosters from a shop?