Oktas8... no, I've never done that and I suspect that nobody else has done it either - at least, not in the course of normal operations. I suspect that the main reason for this provision is consideration of an abnormal operation. An example of this might be where a particular aircraft cannot use all the flap normally required for landing - thus, a higher approach speed is likely to be necessary.
With advance notice of this, ATC can assess weather conditions against the higher MDA and advise the pilot accordingly. If the weather isn't good enough for that higher MDA, the pilot has a bit more time to plan for an alternate approach, or alternate aerodrome.
alf5071h... I was going to download that Busan report, but got a message saying I need to download some sort of graphic rendering utility. Couldn't be bothered with that on this low speed, high cost dialup access. Anyway, I have an idea that the FAA is starting to rethink the size of TERPS circling areas, so we may see a significant enlargement at some stage, so that they'll be more in line with Pans Ops areas.