D&D 5E Shooting into a melee. Disadvantage or not?

[CleverNickName]

If I had these rules in 5e I would have a bunch of halflings. I had some of this in older editions, but not in 5e

If this house-rule is what pushes you into the "I hate that so I'm going to be a hafling" camp, go for it. Halfling archers are fun to play.