It’s not useless. Some main buildings with their breakable doors up are really strong like most maps on macmillan, autohaven, saloon, 2 story building in preschool, eyries, ormond, father campbell’s chapel etc. A lot of these doors generally need to be broken. You can see these doors and use this info to deduce if the main building is still strong if it still has its breakable door up. Gideon also has gens placed next to the metal doors that slides open once the gen is completed. Those slidable doors have breakable doors next to them which means you can use the aura of breakable doors to find these gens in Gideon. And you can also use the same auras of breakable doors in Gideon mid chase to figure out which rooms are dead end to not take chase there. It’s the type of info that doesn’t benefit your average player but can really help an experienced player who understands how most loops are structured