The Giff in 5e?

In a rather surprising addition to Mordenkainen’s Tome of Foes the Giff, a space faring species has been added to D&D 5e. However to most folks disappointment they chose to not make this neutral species a new playable race, instead they chose to make 5 more tiefling variants (can you tell i’m salty?) in my opinion this is a huge missed opportunity to bring something unique to D&D  instead of ripping of franchises like ninja turtles.

Do you think we’ll see them as a PC race in a future book or unearthed arcana? What are your thoughts on the races or lack there of added to Mordenkainen’s?