With the changes to how lighting works (not interested in complaining about it, just pointing out the facts), the standard version of Dark Vision no longer makes darkness irrelevant in a combat scenario. However, Superior Dark Vision is an improved version that allows characters to attack into Darkness as if it's Bright light.
Since standard Dark Vision is weaker, and you're required to use a spell slot, is there a reason to cast the spell Dark Vision as a Wizard? Wouldn't that be specifically for two races (Humans and Halflings) so they can function as characters with standard Dark Vision? As an improvement to the spell, and keeping in line with the lighting changes, I would like to suggest modifying it to provide Superior Dark Vision instead. Not only would this be a more noticeable character buff, but it would make the spell worthwhile for races with standard Dark Vision as well so it's no longer just a boost to one or two (or zero) party members.