I really don't know if this deck is worth playing, but it certainly isn't to be taken lightly. 2 of the best card advantage engines combined with 2 of the best creatures in the game=some good.
I haven't tested CA yet, since it looked a bit clunky, but yours looked interesting, so I gave it a go against Slaver and 4cc and, my, was I mildly surprised by some of the interactions. First, Crucible with Bazaar is simply amazing. I used to run a lot of Bazaar a few years back and I went so far as to add Sacred Ground (lame) to the sideboard at one point since I was having so much trouble keeping Bazaar on the board. Crucible, however, not only protects the Bazaar, but gives you a mana feed through your graveyard. I love it.
In my whopping 2 tests, I had problems getting the bombs through. By countering Survival and using Fire/Ice & StP on Welders (before they become active), both decks were able to scrape up a win.
And Mindslaver was quite deadly against this deck. It has a number of tools which can be used against itself.
Getting around to my point, if anything, I would recommend upping the Crucibles. With limited testing, I quickly figured out that Bazaar + Crucible = Win! I never drew a Crucible vs Slaver, and against 4cc, it would have won handily if not for a timely Cunning Wish dealing with the Crucible that slipped through.