Most importantly, AK and his AAP are still (and probably will always be) more of a movement than ever a political party. Expecting anything more is irrelevant here. Gussa jayaz hai, but don't blame them. They are one of the voices. Voices of dissent against existing political and bureaucratic establishment. That's their way of fighting the system. The system, which no doubt is as corrupt and vulnerable as was when they started this movement.
What they started doing and what they are doing all is part of their existence (romantically calling - wajood). I don't see anything wrong in them trying to be constantly true to that. Their most important agenda has been clean politics and honest people in politics - zero criminals. Then they want is active participation of people in politics. They also want voices to be heard from every section of society. They want social welfare organisations to have political voice. And most importantly they want zero tolerance towards corruption. Sadly it looks like to make all this relevant to media they constantly have tried to target the current authority, even when it is sabka favorite Narendra Modi.
About just AAP. They have, since they were formed, been engaging everyday people, lighting the spark of political consciousness. I have been actively following the party ever since its inception and have appreciated just how much it has been about everyday volunteers than just the founders. I have seen more than one place where an NGO/social activist has felt politically empowered for the first time. I have seen more than few times that AAP volunteers clean out streets in their localities - way before PMO launched swachh bharat abhyaan. And like that I have seen more than few times that AAP has been relevant even without AK anywhere in picture.
Lastly, agreed that both of them have faltered more than few times on their path - but relevance of those instances is miniscule compared to revolutionary political experiment they have brought about. The political experiment which will bear its fruits in no more than 5 years!