The demolition of Blackpool's Wild Mouse is a huge shame. I was born and bred around Blackpool and, whilst the ride wasn't my favourite, you had to give it props for squeezing so much into space the same size as a small cafe.
Many was the time my wife and I would be skidding around in the tiny little mouse car as it lurched off, duck under some track which passed over the lift hill (hoping nobody was going over that bit of track at the time as it would bend quite visibly), hold on for dear life around 90 and 180 degree turns which were so severe the car took them on two wheels, and take the drops which had the airtime of a madman and the pain of a very bad chiropractor.
Screw all the psychological things Alton Towers tries to build around its rides - on Blackpool's Wild Mouse you always experienced some amount of mortal fear. Letting go to put your arms in the air would result in broken ribs.
I haven't been on Sydney's and hope it's a good substitute. Annoyed at Blackpool for not announcing the demolition beforehand (some people think they never intended to announce it yet but leaked pictures forced their hand). They'll have issues finding anything to take its place, such was the tiny amount it took up.