Even if he is rarely appear, you must count on how impactful and meaningful those scenes be.
Threatening Kizaru is one of the memorable moment.
Then the officials hype him up in a Marine meeting.
One Piece publisher also praise him up as Shanks' equal. This line alone will impress people that Shanks Beckman is Luffy Zoro, and proxy Zorowank is always works.
Last but not least, his comparable peers, fellow YC1, are all impressive. Beckman will also be impressive on his own way.