There is already a question on this topic Rama Rajya, but the content of this question is different. And, hence, it is not a duplicate.
Sri Mahatma Gandhi said about Rama Rajya (Rule of Sri Rama) as follows:
Whether Rama of my imagination ever lived or not on this earth, the ancient ideal of Ramarajya is undoubtedly one of true democracy in which the meanest citizen could be sure of swift justice without an elaborate and costly procedure. Even the dog is described by the poet to have received justice under Ramarajya.
Now, the following is the description, from Bala Kanda, about status of people in the rule of King Dasaratha.
I am providing only 4 slokas for understanding of the reader as to how the rule of King Dasaratha was like. Remaining slokas can be read at the link provided above.
तस्मिन्पुरवरे हृष्टा धर्मात्मानो बहुश्रुताः | नरास्तुष्टा धनैः स्वैः स्वैरलुब्धाः सत्यवादिनः ||१-६-६
In that best city Ayodhya all are exuberant yet virtuous ones, and scholars are variously learned ones, people are satisfied with their own riches, they have no greed, and they advocate truthfulness alone.
नाल्पसंनिचयः कश्चिदासीत्तस्मिन्पुरोत्तमे | कुटुंबी यो ह्यसिद्धार्थोऽगवाश्वधनधान्यवान् || १-६-७
None with meagre accumulations is there in that great city and no householder is there without unearned means, and without cows, horses, monies or cereals and who could not sustain his family.
कामी वा न कदर्यो वा नृशंसः पुरुषः क्वचित् | द्रष्टुं शक्यमयोध्यायां नाविद्वान्न च नास्तिकः || १-६-८
None can see a lustful person, or a miser or a cruel one anywhere in that Ayodhya, along with nondescripts or non-believers, for there are no such persons.
सर्वे नराश्च नार्यश्च धर्मशीलाः सुसंयताः | उदिताः शीलवृत्ताभ्यां महर्षय इवामलाः || १-६-९
All the ladies and gentlemen in that city are virtuous in mind, self-controlled ones, they are all self-satisfied like great saints, and both in their conduct and character they are blameless.
My question is when the rule of King Dasaratha is like an idealistic society, what is the speciality of Rama Rajya?