Talk with beasts is an invocation that Warlocks can pick, allowing them to cast it at will, and since Warlocks are often the 'face' of a party I know who my first custom character will be. The lack of languages does disincentivise me a bit to play other races as the appeal of playing other races is the extra language you pick up. Having your Tiefling talk Infernal to a devil, your druid talking sylvan with Fey or Dragonborn with a dragon really makes you feel like a part of the setting. Thankfully common is a universal language here and I will happily talk with everyone and everything (that my Lawful Evil Warlock will be able to manage in a specific playthrough).