Stealth... always a matter of good debate.
I have always maintained that stealth will always be a matter of personal choice and of course the ability to pass and blend into society. It is also a function of finances, FFS is not cheap and not everyone can or will have access to this type of surgery.
I also believe that if you cannot pass, or wish just to be accepted in society (as a known Transsexual person) that is also a matter of personal choice (or dictated by society / circumstances)
I transitioned, lived, worked in the Community I had been in for 18 years. I had family and friends there. 99.9% of the people saw and viewed me as a woman, the small minority that didn't where some of my friends, friends of friends and my family.
I was always unhappier around people who knew my past, it worried me, it puzzled me, it intrigued me, as I always wondered if they genuinely saw me as a woman, where humouring me, just being polite (or obeying the discrimination laws in the UK). At this stage I guess I was partly in stealth as I passed and only a few people knew.
Over this period, I obviously changed all my documentations, underwent physical changes... I to met and had conversations with people, that I knew prior to transition, but they had no idea who I was.
After SRS, I got the opportunity to live and work outside of the UK. I could fully leave my TS past behind, I changed my birth certificate etc and started a new life abroad ... Deep Stealth. I live, work, play, socialize without anyone knowing my past history. Only my Doctor knows of my past, but that to me is a necessity as I would not want to hide anything from the medical profession.
If I did not pass, If I did not have the opportunities I had, I may have had no option to live a life where I am commonly seen only as a "known Transsexual" rather than a woman.
I have a friend who helped me through transition and remember her words well, "Passing and stealth is about the strangers you meet in public seeing you as nothing less that 100% Female as you go about your daily life, family and friends are not the issue, they know and hopefully they will accept"
So thats my take on Stealth and Deep Stealth.
Berleigh... Brow Bossing is the removal of the pronounced ridge of bone that most males have above their brow area (think Neanderthal). You need to see a Male and Female skull side by side to see the normal differences in bone structure. I had both forehead reconstruction and brow bossing removal as part of my FFS.
There is a good description in the link below.
http://www.drdouglasousterhout.com/Buffy