4. RF Seiya Suzuki
Seiya Suzuki has been the everyday right fielder for the Cubs since he came over from the Nippon Professional League in 2022 and he's been a solid player. He's certainly had ups and downs but there have been stretches where Suzuki was not only the hottest hitter on the team, but also the hottest hitter in the National League. In the second half of 2023, Suzuki posted a .313 batting average, a .938 OPS, and a 149 wRC+ (league average is 100).
If Suzuki can keep turning in streaks like that, good things are going to happen for the Cubs for the next few years. Suzuki hasn't been the best defender in right field but he did take home several gold gloves in Japan so the ability is there. If the glove can catch up to the bat, Suzuki will be extremely valuable for the Cubs.