Yeah... closed source is game-ender for something that seeks widespread adoption concurrent with Bitcoin. It can either be closed source supported by entity like Apple or Microsoft or open-source.
Fees on Bitcoin has been a game changer and "Of Block" in LN is another one given that others can support a public ledger and also scale.
Open source does not mean you can have your say because i tried that one with Firefox developers with all the google back doors
in the code and project leader Mr J Poon for Lightning won't even answer emails or pass the message on so another developer can
deal with it.
Here is my contribution to Bitcoin "Open Source" Software but i am sure it will create a bug
public static money MaxFee=1.50// Too many miners (20,000) competing with each other, time some of them left, we only need 1,000 at most