Nothing wrong in this indicators. It is coded MACD, moving averages, AO, Demarker, Momentum and so on. All of them are standard indicators in Metatrader. But this versions are fully improved and well designed with many many options. I think it is good indicators.

Do you remember I started to discuss about digital filters more than 1 year ago on some threads? And I made an agreement with the author of digital filters generators trying to force him to continue his software on our forum and so and so on. But some members said that digital filters indicators are useless. And I stopped. I stopped because I just was thinking that they know, right?
And do you know what is the situation right now? Many brokers and companies are using digital filters indicators for technical analysis as proven method. And Alpari broker is having trading courses on difital filters (for money). On line and for money + seminars + people are travelling and coming to the courses and so on. But I stopped more than 1 year ago because of few guy said that it is useless. Where are those guys? Nowhere. But they stoped us for free development because they wanted to start something commercial with exact this idea.

If we forget this Jurik indicators so somebody will do (analyze/develop/create EA) them on the other forum. And one day we open some very respective analytical website and we will see that some analists are using this set for the analysis published all over the world but we stoped already only because somebody said something.