#3 Less burden on Messi
It's been so many years since Barcelona have played their game around the magician, Lionel Messi. This has come with a lot of responsibilities for the Argentinian maestro. With the likes of Xavi, Iniesta and Neymar gone, Messi has further been burdened with more responsibilities. Nowadays, he is not only responsible for scoring a majority of the goals, but has also become the chief creator of the team. While he has been brilliant as usual with the highest number of goals and assists in the league, he is not getting any younger and his burden should be shared with quality players around him.
Although Messi doesn't have to play on the right flank to create chances thanks to Dembele's sensational performances this season, he still has to drop really deep in the midfield to create goal scoring chances with players like Rakitic not contributing much to the attack. Due to this, at times, Suarez gets isolated up front.
De Jong, being a creative midfielder, can certainly ease off the responsibility of creating chances from Messi's shoulders and even link-up with him, thus forming an incredibly creative duo on the pitch.