I have watched the entire series of Raavan which was aired on Zee TV from 2006-2008 and will give my reviews in a proper manner below:
* Authenticity - The makers did a good research on Raavan and its efforts were shown. Starting from his birth till his death, everything was shown in detail.
* Cast - Narendra Jha who played the title role wasn't convincing enough. He did try his best to showcase the character but could not succeed immensely. He was quite thin for the role and also wasn't ferocious enough to scare people of his power. The actors who played Lord Ram, Lakshman, Hanuman, Jambavan (who had an awful makeup and costumes), Vibhishan, Sugreev, Nal-Neel were quite average. The only 2 actors who played Lord Shiva and Devi Sita (Yashodhan Rana of Om Namah Shivay fame and Namrata Thapa of Yahaan Main Ghar Ghar Kheli fame) were good. These two actors gave full justice to their roles. Even Ravee Gupta who played Raavan's mother Kaikesi gave an average performance.
* Music - This is the only plus point in this average serial. Tapas Relia who gave great music in the animated movie Hanuman (2005) did an excellent job in this serial. The shlokas and background score was fantastic.
* Sets - Very disappointing. It looked like 3D models. See the sets in other mythological series like Siya Ke Ram, Ramayan (2008 and 2012), Devon Ke Dev Mahadev. All these serials had excellent settings. Even Ramanand Sagar's Ramayan had better settings even though it was taken in 1987-88 where there wasn't technology at all.
* Technical aspects - The VFX was just terrible. Even Sagars have the best graphics in all their serials. I agree that due to budget issues, the makers could not give proper VFX but atleast a little decent level could have been maintained. If Sagars would have taken this serial, it would have been a great hit as Sagars always chooses the right cast for the right roles and best VFX.
I would therefore conclude that if Raavan was taken during this time, it would have been a massive hit with good cast, best VFX and proper sets.
I give 4 out of 10 to this serial only due to its good music and these two actors who played Lord Shiva and Goddess Sita.
