I am not finding the blue dots to be useless at all. I have a pretty well filled in tree, and I am finding new info every hour with the new Record and Smart Matches. One of the matches was to a gravestone photo of my great grandmother that I had never seen. I was well aware of the website where the photo was, but had never tried to search it for that particular person before.
It is literally impossible for me to Google search/search MH/seach Findagrave etc daily, weekly or even once a year for everyone in the my family tree file. I could not even search one site for all my names yearly manually. The time saved by having Geni/MH automatically search for me and let me know likely matches is invaluable to me.
I realize that right now the number of potential matches ("Blue dots") seems insanely high, but there are many other Geni users working on them as well. This is the strength of a collaborative genealogy site like Geni.
Think of it like a library. When you enter a library there are tens of thousands of books, right? All those books are like potential "blue dots" of knowledge. No one expects you to read them all, and certainly not in one day! You can look at the one or two you want right then, and someday if you want a different one you can return and look in that section of the library.
Adding sources to profiles is very important! Aftering attaching/confirming a record such as a SSDI entry, it wont need to be done again, and will disappear as a "blue dot" to everyone. And when people look at the profile they will be able to see evidence supporting the data in the profile. This will allow us to better resolve data conflicts, and build the World Tree.
Try to be patient, and see how things are looking in a few days, I think you will have a different opinion on the new Record and Smart Matching.