Lightning network is just the first example of can be done building on P2SH with payment channels.
The lightning network is a great achievement. It is quite unfortunate that people are bashing it. LN has a theoretically infinite capacity. It is absurdly more efficient than transacting on the main-chain in addition to being both decentralized (it should be) and secure as well. It is currently the only known way for Bitcoin to scale towards mainstream adoption.
show me the money!
lightning network sounds good, but its not like its widely used and has been peer reviewed for vulnerabilities.
i dont think we should bank on unproven tech.
but ya it sounds very cool.