I'm happy too that they have atleast started addressing this. But atleast no immediate benefit for someone who are just into their H1.
The way I see it, in the best case scenario a spouse can now get an EAD in 2 years (1 year before starting the GC process, 1 year to get the PERM and the I-140). Still far from being able to work right away, but progress nevertheless.
An efficient marriage strategy considering this proposal would be to get married after you are ~4-5 years into your H1B, and marry somewith with a STEM background. Now those would be very stringent marriage norms :)