If you want any flag names to be added, post it in this thread and I'll add them if they make sense.
For reference, here is the current list:
#flag names, available: 0-127
("flag_0", "flag"),
("flag_1", "Outer Walls"),
("flag_2", "Inner Walls"),
("flag_3", "Courtyard"),
("flag_4", "Keep"),
("flag_5", "Gatehouse"),
("flag_6", "Outer Gatehouse"),
("flag_7", "Inner Gatehouse"),
("flag_8", "Northern Gatehouse"),
("flag_9", "Eastern Gatehouse"),
("flag_10", "Southern Gatehouse"),
("flag_11", "Western Gatehouse"),
("flag_12", "Northern Walls"),
("flag_13", "Eastern Walls"),
("flag_14", "Southern Walls"),
("flag_15", "Western Walls"),
("flag_16", "Upper Walls"),
("flag_17", "Lower Walls"),
("flag_18", "Breach"),
("flag_19", "Harbour"),
("flag_20", "Tower"),
("flag_21", "Northern Tower"),
("flag_22", "Eastern Tower"),
("flag_23", "Southern Tower"),
("flag_24", "Western Tower"),
("flag_25", "Ship"),
("flag_26", "Village"),
("flag_27", "Outer Courtyard"),
("flag_28", "Inner Courtyard"),
("flag_29", "Marketplace"),
("flag_30", "Tavern"),
("flag_31", "Dungeons"),
("flag_32", "Stockades"),
("flag_33", "Blockade"),
("flag_34", "Armory"),
("flag_35", "Smithy"),
("flag_36", "Armory"),
("flag_37", "Barracks"),
("flag_38", "Archery Range"),
("flag_39", "Sewers"),
("flag_40", "Bridge"),
("flag_41", "Outer Bridge"),
("flag_42", "Inner Bridge"),
("flag_43", "Northern Bridge"),
("flag_44", "Eastern Bridge"),
("flag_45", "Southern Bridge"),
("flag_46", "Western Bridge"),
("flag_47", "River Crossing"),
("flag_48", "Stables"),
("flag_49", "Beach"),
("flag_50", "Beach Landing"),
("flag_51", "Siege Camp"),
#last available is flag_127