I do hope you're right, I was just worried because in another thread someone claimed that the Brotherhood was restricted to a very small, out-of-the-way outpost, which would make me very sad. Regardless of how much overexposure they may have enjoyed in FO3, they're one of the iconic factions of the Falloutverse and to not have them appear in anything resembling a significant role would be a shame.
Thats the thing though man
theyre not going to be like reilys rangers wheres theres only 4 or 5 knights, im sure theres atleast 20 or so BOS in their base alone.
and how it'll probaly work is you come across them and they tell you to basically [censored] off and you can respond by helping them(which causes them to expand) or killing them off making them extinct like the minor factions in FO3 like RR.
minor factons can all die maybe but no matter how many NCR/CL you slay theyll never go away.