Next season will be far more difficult because defending the title is not easy because there are many challenges that will be faced by PSG. For competition in Ligue 1 I am not so worried because there are almost no other teams that are able to break the dominance of PSG and overall the players they have are much better.
Winning a title after a long time can even look easier than defending it because at that time you are only contending for the trophy as against a few pressure around but when it happens that you are to defend the title, I bet you will be under some for more pressure than you were in when attempting to win only because both your opponents, the fans and everyone gat theieyes on you to see what you are doing to win back the trophy so they will all keep tabs on you morethan they would much before.