The lightning network implementation could probably have been more publicised. I stopped using Bitcoin for transactions because fees were just insane ($10-$20/transaction at some point). I didn't get the memo. Didn't know that fees had dropped till I had to do another BTC transaction and tried to send a transaction from Coinbase, and realized the fee was only like $0.17. I was amazed!

Advances like these need to be better publicised.