Hot Dog you are missing my point. Yes there are times when t/o data has to be recalculated due to runway changes etc. However if one is expecting that, one normally loads the alternative runway in the secondary flight plan if one has that facility available. In your example EVERYONE is in the same boat and delays in departure are often inevitable when there has been a runway change...I find it unacceptable to be delayed because one operator chooses to calculate takeoff performance at the holding point, and the runway hasn't been changed for days.
