Hence, haven said all this I think the next step of Bitcoin should be targeted at becoming a central world currency having it's own bank and printed in all countries for use. Then it can be a centralized currency for global use and not only on the digital world
What's your take on this?
What, you got no Idea then about Bitcoin or banking system.
There's no printing in Bitcoin, it's mined as block rewards via computing resources which is called miners.
Then Bitcoin is already a currency that's accepted all around the world but not as legal tender apart from El Salvador, and you don't need the recognition from bank or there's no such banks exists, it's just simple you are your own bank.