CE will never "surpass" UC, in either volume or quality.
The original trilogy movies refocused the original series into something that was the embodiment of the Gundam franchise. The sequel series, Zeta, is perhaps the best series in the entire franchise, and extremely popular. Mainstream UC continued with ZZ, CCA, F91, and V. There were side stories like 0080, 0083, 08th MS Team, Igloo. Two of the most iconic anime characters of all time are Amuro Ray and Char Aznable.
After this first original SEED movie, I doubt, after the debacle of Destiny, that there will be any more of the CE timeline. It will disappear, and then the healing can begin.