Yep, I think an explorer that does a better job of visually illustrating the blockchain and (especially) the double-entry bookkeeping transaction system to the average user is critical
idk how to build one. would it be easier to work with a current explorer or just make your own?
From my perspective its probably easier to build my own. This is the closest I've found, however, if you are looking for a starting point: https://tradeblock.com/bitcoin