The control of core developers (or any developers) over the future of bitcoin is hugely exaggerated.
Devs can add new features to the existing software, but they cannot change the blockchain protocol.
Only miners can.
So you're talking to the wrong people.
No I am not.
Let me ask you this, then.
Let's say there is a cataclysm, or whatever and every single "code dev" (whichever criteria you use to tag them) dies...
What effect, in your opinion, would such an event have on the bitcoin as the currency?