I agree with SF that the 4 FGR2s were probably kept by JA with a plan to use them at airshows. As an airshow person and self-declared Mr F4, he would have loved to flown the ac until the present day.
Like Leon I also, possibly stupidly, exceeded the Release to Service in the Tornado F3. While doing a trial against a PR9 I climbed at M1.6 to over 57,000ft and did a look down VID. The Canberra pilot was somewhat surprised as we passed him from above as he cruised at 55,000ft. The F3 needed better understanding of how to get the best out of it's performance. There is no doubt that the F4s brute force would overcome poor flying, however, the F3 was no so forgiving