Since you invite opinion Quixote:
This coding idea may be a good idea if used
extremely sparingly, for example when all possible hints have been exhausted and the only way to help a poster stuck with an element of the puzzle is to give more information than others might want to see. It's the same principle as using TinyURL to point to a helpful page I suppose, and that works well.
The problem with more than a small number of coded posts is we could end up with pages of gobbledegook. Even if there is a requirement to post some plain text and the decoder link with the coded post (which I think there should be), this could well be off-putting to newcomers and part-time posters.
The other danger is that this might offer carte blanche to give away entire themes which, coded or not, is surely against the spirit of this board.
I'm not dismissing it out of hand, but I wouldn't want to see more than a smattering of these coded posts, preferably towards the end of the thread when discussion of the puzzle has largely run its course.
Well, you did ask...