I think the exlplosive speed is something we have been lacking within many of our up and coming players, moreso than lack of size and height.
Young Izaak Isdale has that explosive speed, so hopefully that proves enough to overcome his lack of height,
Luke Laulilli and Talkyn Da Silva are the only other players I can recall we have developed in recent times that have explosive speed and we will no longer have either of them. I think letting them both go will be a decision we regret before too long.
On the explosive speed topic, surely we can find some back rowers that fit this description.