All of these have been asked many times before. I' start on the auto update. ccleaner has had over 350million downloads. Can you imagine the cost of the bandwidth for an application that updates monthly? CCleaner is as you know freeware. So not making a direct purchase profit.
All in one, Been asked before. Will it happen? Only piriform can answer this one. I personally would not use it, though others would. I would be much happier them spending there time on updating each application individually rather then a new application that would halt/slow down the others production. This is just MY opinion though.
I personally would not want a regeditor in ccleaner. Simple reasons i like ccleaners un bloated size. Besides what is wrong with msconfig? Simple, easy to access already on my machine.
As for duplicate finder im neither here nor there on the matter. I dont personally bother searching for duplicates..