That is the community that doesn't *mine* (just propagates txs and perhaps verifies txs that they receive).
You can't have multiple implementations that mine or the blockchain will fork (e.g. no-one has created a block with BitcoinJ that is in the current blockchain).
Even Mike Hearn would agree with this (as I was chastised by him for criticising the fact that there wasn't a Bitcoin RFC back in 2012).
I think that your lack of understanding is what leads you to not realise why your proposals are unfeasible.
you can
do you really think all miners are using the exact same software..
do you really think the pools havent done their own little tweaks.. not to break the fundamental rules.. but to do other feature benefits for them locally..
if you think that everyone in the world should use the exact same version of bitcoin-core, and no one should have their own implementations that still follow the main rules.. but have added features or cleaner code that doesnt affect the network.. then you really have got your self stuck in the blockstream mantra