You mean in the first layer?

The whole scalability problem has been discussed a million times in this forum. If you increase the block size, you'll make people pay less in fees, but hard to retain the decentralization. It turns out that the lightning network is, indeed, the greatest and most practical solution. Instead of fulling all those computers' hard drive with unnecessary transactions, you're just broadcasting the final balance.

Advatages:

• Better privacy. A blockchain analyzer can't track down your routed transactions.
• Instant transaction. (no need to wait for block inclusion)
• Nearly zero fees