The question doesn't sound well considered. What do you expect for the "undisturbed frequency response" of an OTA followed by a buffer? Infinite bandwidth, infinite gain, or even both? An unloaded real OTA will always have a pole related to it's ouput impedance. If you don't manage to make it the dominant one and aplly pole-splitting to the others in return, the OP will be most likely useless as an amplifier, because it doesn't allow stable feedback operation.
If OTA output would be exposed as a terminal, it's reasonable to omit a compensation capacitor.