Guy,
I should have said most initial descent clearances in AC...
With regard to starting down on your word of command, we are likely to use the 'capture' feature on the FMS, which does mean we will vacate the level now, but we will only do 1000fpm until we establish on the ideal profile, when we commence the idle thrust descent. Thus, it only works when you need us to vacate, not when you want us down to the cleared level right away.
As to the 'direct to where' question, the centre-fix would be fine. If you can't give us that, then whatever you can will do very well. Leaving us on the full route when it's quiet only burns fuel.
Captain Stable,
Your suggested phraseology is ideal. However, whilst the present standard phraseology is not used to best effect (APR controllers take note) there's little point in attempting to achieve change.
AF1,
In your post, there's an element of ATC flying the aircraft for us, instead of issuing timely clearances. Meantime we'll be wondering when the descent clearance is coming. This style of controlling all too often leads to missed clearances, as, whilst forward planning is fine, this relies upon jobs being done 'just in time'. Other things frequently intervene and that which should have been done' just in time' ends up late. That's what causes the last-minute death dive for the level.
Also, see above regarding to 'getting us on our way'. We don't use open descent/VNAV speed/level change if something else wil do a better job.
On the 'direct' issue, I know all about the co-ordination issue (I used to do it). That's why it's especially galling when there's no 'standby', just an 'approved'. I wouldn't ask for something which I knew would cause a significant increase in your workload.
All the above said in a brotherly spirit - we may fly the aircraft, but you're on our team.
NorthernSky (ex-ATCO btw)