Let them do it, sit back relax and watch it go down the slippery slope over the decade.
Perhaps long after reversible transactions, inflation/deflation according to economic factors and a more sane transaction storage practice are in it finally becomes a usable payment system one can call a currency. Nobody except the victims of the pump & dump will shed a tear about the fixed coin supply if there is real economic growth.
interesting approach
What you describe there is certainly not the bitcoin people sign up for today though.
But i'll probably personally really take the approach of sitting back and relaxing. Speculating on alts just became a lot more rational.
I'm pretty confident the original Bitcoin chain will live on for decades though.
Here is the thing: Nobody required them to to sign up for anything, not satoshi, gavin, the bitcoin foundation or mark karpeles.
And it does matter what people decide to be Bitcoin in the future, innovations don't happen inevitably. It happens only if a majority of the people realize they need it and if the people who have the necessary skills to innovate decide to work on it.
Take things like the electric car or the electronic cigarette. The concepts were around for decades but they started to become a thing just a few years ago. That happened not because an inevitable trend but because a few people decided to do it and many others saw how good it is and started using it.