Hi,
I would just like to add a couple of points.
Rescue3
IFPS can give you a rerouteing. Of couse if the restriction is on departure or arrival theres no way a change of route is going to be of any help. However if it's enroute most of the time something can be arranged. A lot of Bizjet/Coorporate pilots have got the hang of this now, and do it on a regular basis.
The drawback is of couse that you might even get a bigger delay (does not happens very often). Pre coordination with the FMD (by the way it's called ETFMS these days) allows to come back to the original routeing and you just take the delay.
EL ZIPPO
Also, if it's impossible to have people going to Brussels or Bretigny, it can be arranged for someone from CFMU to go to your company and give a presentation.