I'd have to disagree with you on this one MG; the MOR system, whilst a bit of a pain to follow for minor incidents, is all about trends and solutions; if minor matters are dealt with on a local level, then the individual who made the mistake learns a lesson but that's the end of it. There may be an organisational cause to these errors which can't be addressed if there's no data bank, even for seemingly trivial matters. To take the TAF example, it may be that there's an error in the computer model, or an individual forecaster with a training need.
The "personal approach" certainly works for individual cases but it doesn't lead to long term solutions. I suppose the answer is the phone call followed up by an MOR, with the individual in question made aware that it's nothing personal. Not easy.