Apr 18 2016
It depends on what the target audience of the feed is. If it's targeted at people who will be looking primarily for (1) content with novelty value, (2) reasonably high-quality content, and (3) meaningful/informative content, then it would make sense to limit the feed to (1) new pages, (2) patrolled edits, and (3) non-redirect pages, respectively.
Apr 16 2016
Here's the code I came up with:
I decided it's probably better to use feedrecentchanges, since that doesn't limit the feed of "new" pages to those with only one revision in their history.
Another approach I tried was adding an "excluderedirects" parameter: https://www.mediawiki.org/w/index.php?title=User%3ACondorcent%2FApiFeedWatchlist.php&type=revision&diff=2099782&oldid=2099781