Our goal is to translate a text to Sign Language. We are considering using Unity. Would you use it?
Asking an Unity forum? Yes, I would use it. It may be overkill depending on how you want to do it. You could present pictures of the hand poses, and/or play videos of hands in motion. Neither require Unity, but you could use Unity to do that. If you want 3D models of hands to move then Unity is more sensible for what it’s designed for.