You guys may want to re-read the Letters. Yoshi explicitly says that Chimera and Hydra will NOT be a DF choice in 2.1

Q: Will you be adding the dhorme chimera, the hydra, and the Binding Coil of Bahamut to the Duty Finder?
A: We won’t be adding this in patch 2.1. Both the dhorme chimera and hydra are part of a system that is outside of the Duty Finder, but we are discussing adjusting this, so it may be changed in the not too distant future.