Breach - Atlas node to turn off fortresses and breach bosses

Having these mechanics be a special part of the breach mechanic that shows up once in a while and is rewarding can be fun and cool. However, if you are doing strats that specifically juicing breach hives and you get a fortress it can feel dissapointing instead (whats the point of the flammable burrows nodes if I can randomly encounter a fortress). On the other side with unstable breaches encountering the boss can feel like a punishment, especially if your playing builds that struggle with the bosses, and having something akin to the beyond passive of turning bosses off could be helpful. Potential upsides (if needed) could be more rares or more waves depending on the mechanic.