Comparing the E-7 satellite at 119 W to Ciel-2 from a power and spotbeam capabilities perspective is useful. E-7 has a quoted power of 13 kW compared to 10.8 kW for Ciel-2 but one could argue that Ciel-2 being newer is probably more efficient. E-7 has 16 CONUS TPs active at 240 watts and up to 25 TPs providing spotbeam coverage. The CONUS TPs on Ciel-2 are also at 240 watts so one can see what the power limitations are for Ciel-2. Now E-7 could have been designed with a very high power margin but I can not believe that Ciel-2 could have the capability to provide all 16 CONUS TPs and even half of the 145 spot TPs at the same time, perhaps 50 at most.
Some folks might wonder why Dish would have Ciel-2 designed this way. First it does provide backup for the E-10 spotbeams at 110 W. One also has to look a few years down the line when Dish converts everthing to MPEG-4. Besides internationals, there about 215 video channels on Dish not including locals. Assuming all of them were HD (which is unlikely but certainly that would be the extreme), at 7 HD channels per TP, Dish would need about 31 CONUS TPS. For the Western Arc, Dish currently uses 19 TPs at 110 W and 16 TPs at 119 W in CONUS mode for a total of 35, four more than the needed 31. So Dish doesn't really need CONUS TPs at 129 W in the future but they will need a massive number of spotbeams for HD locals. As a side note, I would expect the E-14 satellite which is going to 119 W to either be a satellite like Ciel-2, both spotbeam and CONUS or just a big spotbeam satellite like E-10.