Wish the Enclave was powerful and played a role as a contender for Vegas the player can join. Not just help, join.
There are 5 known alive Enclave members on the West Coast, and they are old farts. The remaining Enclave forces went to the East. For all intents and purposes, the Enclave was wiped out in the West Coast. If Bethesda is concerned with consistency, they'll be dead in the East in Fallout 4. Obsidian made the decision not to include the Enclave as a main power and have the Remnants for the sole reason that it makes sense. The only place where organized Enclave would exist is Chicago, but that is merely an outpost, not a base of operations such as Ravenrock.
As everyone else said, get Arcade and do his quest. Just don't expect it to be like Fallout 3. These are old guys from the original Enclave forces in Fallout 2. There is no Enclave in New Vegas, just former Enclave members.