We've all seen how they folded when Van Dijk was out with a cruciate a few seasons ago, We know all too well as it happened us this season with Rodri and other long term absentees.
Liverpool got lucky last season when it came to injuries they went through the season having very few injuries, Next season could be completely different.
You've already mentioned the centre back situation, As well as that Salah is 33 and we all know how he reacts to being substituted, We could well see him on bench a few times next season as surely he won't play every three days, If his goals dry up it's a massive problem for them on top of the fact he fell off a cliff the second part of the season last season...Hopefully that's his age starting to show.