My biggest pet peeve with projects is when the feature list is actually a mix of features and things that are "upcoming"/"to be supported." This feature list isn't really a feature list either: it's just "simple" and "fast" (but fast is just 'written in a new exciting programming language'). Interruption and resuming is the first actual feature, but that's "soon."

Feature lists should be feature lists. On open source projects especially, I've seen "soon" take weeks or months. Move features that aren't features into a "upcoming" or "planned" block or make an issue, but don't list it as a feature when it isn't implemented.