who is ark for? it's for people who already decided that the UX of self-custody lightning is in an unacceptable state. the bar is higher. if ark is just as shitty as lightning then nothing is gained.
clArk is too interactive. the user has to do something to the money that they have in the ASP all the time so that it can't get stolen. this will cause problems especially for people who want to use it infrequently or on their phone. a person who won't manage their own lighting channels is not gonna still look after an always on computer just so they can use ark instead.
I don't think ark will appeal to the exact kind of people who would use it unless it has CTV and maybe CSFS. clArk is just a proof of concept. you need the full thing or it will not catch on.