Ok, hopefully there will be more users who will want it back.
When/if that happens, I think it could be better to change it a little. Generating images over and over seems a little pointless, because most of the time, no one is looking at them. It's possible to use longer interval, but when someone needs to look (often when something "funny" starts happening), you need as fresh data as possible, so preferably very short interval. But one goes against the other.
The solution would be to make it work on-demand. Make maps accessible using e.g. http://dudeserver/dude/maps/<mapname>.<extension
> and only generate new image when the request comes. Plus some simple caching, to protect router from too many requests at the same time, i.e. do not generate new image if the old one is not older than X seconds.