I agree with you, still too far to reach the trophy. there is a lot of homework for Indonesia to be better, the development of national football is very monotonous from every match and only this time the new coach makes a difference, this is quite good as a new start. the only thing that has to be done in the future is to do your best while playing. I think this is enough for a team that has just entered again in the asia cup.
The problem of Indonesian National team is not about the development of the team, but it is more about political issue in PSSI as the official Indonesian football association.
Indonesia has so many talented players, but most of the time decision by the coach to choose the players and how to manage the team is still influenced by political power.
Seeing Indonesian back to Asian Cup can be considered as great achievement already because the last time they went to Asian Cup was around 15 years ago (2007).
Indonesia are the lowest rank team in this tournament, it should be taken as an advantage as they should have nothing to lose and fans should not hope for too high target.