I have no experience with SMD...
But one hurdle is the hassle with applying solderpaste to each spot.
So I thought: in stead of applying solderpaste with seringes or stencils, would it not be much easier to dip SMD parts in bath of solder paste?
It appears that it is done with BGA's
Example of dipping paste:
I have nowhere seen people doing SMD work with dipping. It seems so much simpeler (once you are able to make a controlled thin layer of paste).
So what is the problem?