Ok, so here is the update on the laser...
The treatements are 3-6 months apart, but are combined with 2 lasers (one can be more often, but generally they are done together), and generally take a total of 2 years.
After the first laser treatment on the neck scars, I was concerned because everything seemed to get tighter, but meeting with my surgeon, he advised that this was likely to to nerve stimulation.
There has been a reduction in the raised portions of the scars (they were very pronounced especially on one side of my neck), and the redness has faded. The "cosmetic" side is a perk, but not what I am really interested in.
The mobility has not yet improved, but I've only been once so that is to be expected.
My next session is in April, and I'm hoping to have more to report then.