From what De Rossi has shown since he coached Roma since Jose Mourinho left I think there is nothing to doubt, De Rossi has exceeded many people's expectations but regarding the future will be better or not that no one knows we just have to wait for next season when De Rossi builds this team according to his wishes.
I saw some of Roma's transfers and I think it's good enough so that they will most likely be better next season, I'm quite optimistic about that.
I also want to see how AS Roma starts this season with De Rossi still being coached, because the level of change that De Rossi has made while coaching AS Roma has also been quite clear and that can at least be a good hope again for AS Roma fans in the season that will start again soon. I also have no doubts about De Rossi's abilities and also want to see how AS Roma can rank in the top four in the season that will start this month because Roma is a big team that must provide fierce competition to its rivals in Serie A.