wish writers would use this more:
There are many levels with the classic "there are papers/books/notes but are not in a known language", so using babel balm would reveal more about the place. I think this has great potential.
I don't think the entity experiments were… enough? any of the groups have enough resources to pin down a faceling and apply the balm. If the balm can help with extracting information from entities or befriend them this could have major lore implications…
I think you could decrypt encrypted messages with this… and this is overpowered… You could theoretically print the electronic encrypted messages (in binary, hex or even ascii) and turn them into plain text. This enables packet sniffing for encrypted Wi-Fi