When Smart Contracts will be implemented on the Bitcoin Blockchain that will be the standard. Even if a better coin or project will arise Bitcoin will always have its own appeal.
External data feeds break Nash equilibrium of mining. The only way to have this work securely is to entirely centralize mining, but this is where BitCON is headed any way.
There are some types of Smart Contracts that work without external data feeds, but not many. Basically Smart Contracts is bullshit. It is just another way to put all our digital information in public and under centralized control, so we are enslaved.