Since races with innate spell casting no longer have innate spell casting, you may want to consider giving them something else. It may be as small as 1-2 new proficiencies. I'd say 1 cantrip is worth 1 skill, and a spell/long rest is worth 1 skill. It's not very flavorful but it gets the job done unless you can give heroic members of a race something more interesting and flavorful for their race.

Another option is to just not give them anything, bring the mundanes back into the forefront. The more I think about it the more I like that option actually.