No blooming but as others mentioned I do re hydrate MWF by putting warm water on the puck after the shave and leaving over night to absorb the water.
It helps to prevent the cracking and shrinking of the soap. Still lathers great for me though, regardless.
I have experimented since posting the OP a few weeks ago. In my honest opinion loading, building lather and overall results were improved with all my soaps when they WERE bloomed. I put a few millimeters of warm water on the puck and leave it while I shower. I use some soap water on my face and load up for 30 seconds. I have noticed a thicker lather with noticably more slickness from the off. I'm going to continue to bloom my soaps from now on.
I almost never bloom. However, if I have a very hard soap, I may (right before loading) put some water on the top and quickly rub both thumbs over the surface of the soap. This seems to loosen the fits layer of the soap.