Lightning Network will surely go a long way to improve speed. When it first came to light it hosted its first successful payments, with developers spending bitcoin to purchase articles on Y'alls, a micropayment blogging site built for demonstration purposes by programmer called Alex Bosworth. I have been reading about it  and I know a guy, Bosworth separately used the network to pay a phone bill with his own bitcoin. As he tweeted in late December, “Speed: Instant. Fee: Zero. Future: Almost Here.”  Blockstream has also launched an ecommerce site selling t-shirts and stickers that only accepts Lightning payments. I see a great prospect for Lightning network