Psyker rules and potential Sisters of Silence changes in response
With the leaks of how psykers will work with the orks being that psychic tests have you roll a d6 and on 1 are battleshocked and being unable to use psychic powers if battleshocked, I think this is great news for the Sisters of Silence. Until now they had no ability to interact with psychic nonsense aside from their FNP against psychic and anti-psyker weaponry. Battleshocks, a thing we already have in lore and in their detachment, now disables psychic powers.
Due to this, I am 100% convinced that the Custodes Codex will give Sisters of Silence battleshock abilities bog standard instead of detachment reliant battleshock abilities, which means they can be much more generally useful compared to before as they could have support utility instead of just being bodies to do actions and hold objectives.