It is interesting to note that his "daughter" is actually supposedly Jessie Quick. Another speedster from the comics. Remember Zoom wants to steal everyone's speed cause he has to be the fastest man alive.
It would be more hilarious if it was E2 Barry, but E2 Barry be played by the actor who plays Barry's Dad who played Barry in the 80s Flash tv show. It would all make sense!
As for who he really is... I'm hoping for real its Barry's dad from E2. But remember Its pretty clear that Wells made Zoom, and THEN E2's collider exploded. Zoom is more like E2 Wells' Grodd. He had <enter speculated name here> in the basement and did some experiment that made him into Zoom. More than likely we will get this reveal to the audience in December.
Unfortunately there is too much going on in the Flarrow-verse to focus completely on zoom. Flash still needs to setup Hawkgirl/man, Randal Savage and all that time travel jazz and we have roughly 4-5 episodes left before the winter finale that sets up Legends of Tomorrow. (I'd say Arrow could set up the spinoff but lets be real here, Flash is the more popular of the two.)