there is no reason we cant have bitcoin handle small and large TX tho. this thread attempts to prove its beneficial for decentralization that both small and big payments are allowed on the blockchain.
There is a reason - it is the cost for processing txs.
It is simply cheaper to process txs in a centralised manner (always has been and always will be).
So unless you have worked out how to change the laws of physics I'm afraid your idea is just plain wrong.
Again - why does no-one seem to care that Bitcoin has failed to do anything in the remittance market (low hanging fruit) yet argue so much about stupid small txs?
If it can't replace SWIFT and WU then really it will never replace VISA (yet you only seem to care about competing with VISA and not care about the "big picture").