The question is one of how the layers should look like. While I don't have anything against LN as such, it would make most custom uses of the scripting language

The question is one of how the layers should look like. While I don't have anything against LN as such, it would make most custom uses of the scripting language unusable. You can't enforce arbitary year chosen scripts within LN channels the way you can with regular transactions. A layer for transaction merging built using Zero-knowledge proofs which can preserve the full capabilities of individual scripts would be the ideal solution, and could become fully server independent.