Robinruth, keep cracking away. As a recent convert to the Listener who has benefited hugely from hints on earlier threads, it would be hypocritical of me to suggest they should be banned now my solving abilities seem, touch wood, to be improving.
I think many of the hints last week were fine. Several of them amount, in truth, to little more than "read the preamble carefully, and then reread it" and "is there any relevance in the title?", which is fine. But a few, particularly those which focused on the geographic, or particularly cartographic, aspect of the interpretation, seemed more like instruction manuals for completion rather than hints. Even the use of the word "colo(u)red" in an early post might have been considered an unnecessary steer, though that' was arguably clear only with the benefit of hindsight.
I think the giving of hints is an art, actually. As far as this week's puzzle is concerned, again, the first two sentences of the preamble are the key. Once you start finding answers to some of the "remaining clues", you should find their entry into the grid helps things along.