^ This is a great idea and I'm going to use it in the upcoming year. There are some countries on the FR service list e.g. Italy where same-day change to any airport will be very valuable. Exit row room on the FR738 is no worse than Club Europe on BA, in fact, better room than some configs.
@:-) It would also be nice if the Biz fare offered the same-day option of changing departure airport e.g. STN for LTN or LGW.
WN Business Select fares work well for some US domestic travelers for the same reasons. I've used these before from time to time and have been satisfied. The FR value package looks to be modeled closely on WN's product.