goldfish, things seem to be a bit different over here in the northern hemisphere. ATC WILL actually initiate an intersection take-off in order to assist with traffic flow. Especially in the case of a mixed prop and jet airport ATC will often want the prop to take an intersection in order for him to jump the que and not block traffic thatīs behind him and possibly on the same departure route. i will often tell the FO to state on first contact with TWR or GND (depends on the airport) that we are ABLE for intersection X, Y or Z. ATC can then decide if they can use this info to THEIR advantage. If there is no advantage for anyone then they will usually say so and then i will usually elect to take full length. even if it might seem unprofessional to you to jump the que at the end of the day it might not be to the disadvantage of the guy ahead of me who has to wait anyway because the guy ahead of him is on the same SID (and i will then take-off during his waiting time) and the B767 behind me with very little extra fuel will actually be happy to see me take off earlier because i would have blocked him (me being a prop guy) if i had stayed in the que.
so, at the end of the day, the intersection take-offs do have their merit. at least over here they do...