Link doesn't need to be reimagined as he's in his 30s hero just because Thomas Sangster plays him. The actor can get away with playing ten year younger without too much stretch, due to his youthful appearance. He's unique in that way.Considering Link's been shown in the games as being everything from probably 5 years old (Wind Waker) to upwards of 17 (BOTW and arguably most of the others), and could easily be re-imagined as even older than that up to 30-ish, I still wouldn't mind Thomas Sangster either. I would've preferred if a movie had been made earlier so he could've appeared younger, but he's still got the look, and could easily play an older version of Link