this is the only way you can scale lightning to large numbers of people. the only way to "fix" lightning right now is by making it centralized and adding trust assumptions. you can bitch all you want about spark but you should redirect your frustration to the lack of building blocks available on L1. premature ossification will just lead to things like spark. it is time to think about doing better. covenant opcodes are most likely the next building blocks to get added. https://en.bitcoin.it/wiki/Covenants_support