This season, Inter is indeed difficult to stop because the competitors seem to be having problems with their teams. Juventus, Milan and even Napoli couldn't do much because of inconsistent performances which didn't make the competition in Serie A interesting. The Nerazzurri squad will certainly still be solid next season but I see there is no guarantee that they will be able to dominate Serie A again. Juventus will be quite a serious challenger next season, they always have the mentality to become champions, but this season they have been penalized with points deducted by the FIGC, which has had an impact on the team's condition.
The situation of Roma before De Rossi's arrival put them in a situation where they have to fix a bit of loops and come on top. Before now, Mourinho has had the responsibility to ensure good league game results and I won't blame him much for the times of loss because their opponents, their opponents in some situations have been too title contenders and personally wouldn't embrace a loss based on the goal they have for themselves.
De Rossi has been given time to show himself. They're playing the league games and as well as the European games, their attention is on 2 trophies, European trophy will be a bit difficult for them and I don't think that currently De Rossi would be able to scale through all the clubs that will be presented to him to face in each advancement phase of the tournament. Even in the Serie A, it'll be difficult for them to gain the top stand so it's just best that they focus their strength and struggle to maintaining a good result that'll see them scale through to the European cups next season.
De Rossi can still make a great team from Roma. The club is eager to see this man take them to better heights next season. They did well in staying up until the semi finals stage of the UEL and also staying ahead till the last minutes of the game against Leverkusen last week. It wasn't much of a good game for them but it's commendable still so far as they've performed in their season's endeavors.