Adding a new crew voice line - Possible?

[Tabris]

Hello all,

I'll preface this by saying two things: 1) my search skills aren't great, so sorry if this has already been discussed, and 2) there will be a few assumptions here that, if I'm wrong about, will sink the whole endeavor before it even starts. That being said,

tl;dr: I want to add voice lines for game-happenings that are currently only conveyed in text form. Think "raising snorkel!" and "detecting radar signals!" I'm not sure if this is possible, but I think it might be.

Here's why I think there's hope: Each crew role you can interact with has a file that seems to influence when voice lines are played. For the chief it's "Message_CH" for example. It looks like a message will play when certain parameters are met, and then it specifies which .ogg to play. Here's an entire instance:
[Msg1]
MsgId=1
Priority=10
Timeout=20
Param0=1
MsgOgg00=Not_enough_crew_in_diesel_engine_compartm ent_sir
;ChE_P_Not_enough_crew_in_diesel_engine_compartmen t_sir.ogg

Surely, if this file does indeed dictate when each voice line plays, then somewhere there's a file containing all the reference parameters? Somewhere in the mess of .DATs that we can thankfully edit with S3D. This isn't merely for immersion, this would be a huge quality-of-life improvement. If the radioman actually said aloud "detecting radar signals!" you would have that much more time to react, instead of having to notice the message in the text log, especially if you had gotten up from your desk for a moment. What the sound file actually sounds like isn't relevant. As a temporary measure it could be a brief tone or alarm, a text-to-speech line, or even just a recording of yourself saying it.

The fact that I'm not aware of any such mod, and you gentlemen have been at this for 15 years, is a bad sign. If someone can even tell me with relative certainty that it's not possible, I'd appreciate that too. Here's hoping!

Yours,
Tabris