Klopp's major problem from last season was creativity from the midfield and he really wants to change that. I feel their midfield is okay right now but they need an additional player for quality squad depth.
Liverpool will be a contender for the league next season. They will continue on the form they ended with last season. The players and coach are very motivated right now so they will be ready next season. Liverpool will most likely not go without a trophy next season.
I'm looking forward to seeing MacAllister for Liverpool. I really enjoyed him at Brighton and he was superb in the world cup. I love intelligent midfielders and MacAllister is not only intelligent, but he's also a worker, the perfect player for Klopp's system.
We have to expect that Liverpool will return in the competition after their horrible season. They lost Firmino who moved to Al Hilal in Saudi Arabia league for free and they got two midfielders who could boost the team.
I agree that the midfield need special attention to make the game be smoother but they need to focus on the attack line too with Salah playing good and Nunez improving his performance.
Until now I don't see Liverpool very competitive for EPL title but picking a Champions League spot or maybe FA or EFL Cup might be possible.