HWSL
You are very much out of the loop reference speed below 10000. I am not surprised though, as a Dick Smith initiative was to remove CASA flying inspectors from the operational seats of airliners.
Until recently, it was SOP for domestic airlines to maintain 300kts below 10000. You were expected to hit and altitude distance gate of 5000 and 20DME. If you did not, flow would be disrupted.
About 10% of the time you would be asked to "make high speed descent". You would hit the gate at anything between 320 & 350KTS. Decelartion would commence from the gate to a stock standard Aussie ILS platform altitude of 3000', followed by a decelerating approach to a stabilisation of about 1000' ( VMC may have been as low as 500' ).
ATC would in some areas ask a high speed descent to 15DME. Many would not deliver in this circumstance.
I have even heard ATC ask an aircraft to : "maintain best subsonic speed to the field, for sequencing". Thankfully a fast jet!
Congestion, STAR arrivals and QF's arrival on domestic sectors begain a noted wane in high speed descents.
If they are not around today, what was the final nail in the coffin?
As earlier mentioned, 250 below 10000' was not common practice in Australia.