yes, things are changing over time...
regarding your new nice crew voices and if you find the time, i expanded SDBSM with an additional crew sound mod (still beta), the kind of voices are controlable via scripting and crew state, for expample the crew speak different 3D voices if in:
1: Submerged state
2: Normal state
3: Silent Running state
4: Hunter/Hunted state
so maybe you want to have a look (hear) on what is done allready with SDBSM and contribute some expansions for it (maybe working on module like little projects fitting also into your current ammount of freetime).
...atm the work on SDBSM is on hold because there are new "real crew" scripts in work by TDW, and until this is finished it would make no sence working on it because most of the SDBSM entys have to be reinjected into them.
maybe you find some time looking into your creak sounds for SH5, as i wasnt able to play more then 4 shuffeling creaks atm, we need sond trigger`s for different depts, to be able "dept group shuffeling" your creaks
SDBSM:
http://www.subsim.com/radioroom/showthread.php?t=164552