After skimming through Blood Ties, I found no evidence of Yas offing my character due to inactivity. So, I'm just going to consider him alive and well.
Oh, and what happened to the BoS post-Blood Ties? It's pretty much essential to shape my character (BoS-NCR truce, New Vegas independence, eradication?).
Name: Nevest Ronce
Age: 23
Gender: Male
Race: Human
Occupation: Former Brotherhood of Steel Knight
Eyes: Blue
Hair: Buzzed, dark brown
Height: 6'0"
Weight: 210 lbs.
Complexion: Caucasian, pale
Voice: Deep, radio-like
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Armaments: Upgraded AEP7 laser pistol; weathered machete
Armor & Clothing: Custom T-51b metal armor & mask, gray long-sleeve undershirt, black cargo pants, black steel-toed boots.
Items: Rusted canteen (purified), med-x (x2), psycho (x1), slasher (x1), stimpacks (x3)
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Bio: Following the events of Blood Ties, Nevest returned to the Brotherhood of Steel in Hidden Valley. While ecstatic to see his brothers, some part of him, deep down, longed to return to the surface he had become adjusted to. For a time, he suppressed these feelings; he was content to live with his brothers in the bunker they called home. Some time soon, when the Brotherhood called for a truce with the New California Republic, Nevest made vocal his dismay for what he believed to be treachery on behalf of Elder McNamara. Albeit quietly, Hardin was right to challenge McNamara's position, and so Nevest outright protested the Elder's decisions.
The time came for the Brotherhood to participate in the Second Battle of Hoover Dam. McNamara nominated Nevest in particular to be given the duty of joining NCR forces at the battle, undoubtedly in spite of his Nevest's campaign against what he believed to be his "disillusioned" elder. Nevest, instead of outright defying McNamara, agreed. Once preparations were complete and the brothers that were chosen to partake in the battle headed for Hoover Dam, Nevest ran off some time along the way. It was later found out that Nevest had spent his last days in the bunker disassembling his T-51b armor, in order to craft yet another non-BoS affiliated metal suit... this one, at least, would provide more protection than the battered and deteriorated armor he could scavenge from the incident at Helios.
Nevest headed East, into Caesar's lands. Even though the NCR would prevail with the might of the Brotherhood at their back, they couldn't spread their disease further East until their military power was nurtured back to full strength. Nevest had begun to spiral downwards into severe depression. To battle the mental illness, he used med-x to "calm down". This, as days turned to weeks and months, applied to psycho to feel "up". It wasn't a great deal of time before he was scavenging hospital and military bases for his fix, instead of food or other valuable supplies. Nevest, over a period of two years, was no longer the virtuous knight dedicated to protecting the world from itself.