Everyone knows that there is a problem with Bitcoin that needs to be fixed before there's mass adoption. What's one of the main problems? Miners. If you don't pay a fee or if your fee is too low they make you wait, sometimes for hours. Another thing is the block size. I believe that replacing miners with another system will make it so Bitcoin can actually function as an efficient system, instead of miners ignoring your transaction, it will go through quickly and painlessly.
A transaction in order to be accepted, the main problem is that it takes 3 blocks (~30 minutes) for a transaction to be accepted by an exchange. If we replace the blockchain then it no longer becomes Bitcoin as mining is required in order to keep the currency as decentralised as possible.
Another thing is the block size and fixing Bitcoin. The average person needs to understand what's going on behind the scenes, people who are involved in alt coins are voting against fixing Bitcoin. In other words: keeping Bitcoin broken and UNFIXABLE, due to corrupt voting practices is considered a viable business practice.
I'm not sure bitcoin is broken? The bugs that are found are fixed quite well by the developers (so far). It isn't unfixable (altcoins are more unfixable).
What's going on behind the scenes? Bribes. People are paying well known people within the Bitcoin community to keep Bitcoin broken, they bribe them to say "There's no problems with Bitcoin! No need for an upgrade! 
". What I think should be done is the community should vote in people to work on Bitcoin software design to fix Bitcoin or it will remain broken for many years.
Is there evidence of them saying this? I'd be happy to consider it if there is, if not, Bitcoin has fewer problems that what you think it does. ". What I think should be done is the community should vote in people to work on Bitcoin software design to fix Bitcoin or it will remain broken for many years.