In that situation I'd take Resilient - Wisdom for sure. Failing a Wisdom save is usually pretty bad (Hold, Slow etc) and the +1 Wis helps othe parts of your build.
Backgrounds (p. 7). The following text was added to the end of the paragraph: “These backgrounds each give a feat. If a character takes a background from elsewhere and doesn’t get a feat from that background, the character gains one of the following feats of the player’s choice: Magic Initiate...
It's not as good as the MMOM Eladrin, Shadar-Kai or new Astral Elf teleports. The Harengon version can't be used to escape Grapples or pass through barriers like cage bars. They all get to use their abilities PB/Long rest.