I don't have any "tank" calls, but maybe your automated voice used for "99 CASE One recover..." could work. I'll email you some bingo .wav files.
Thinking it would be a nice feature as fuel status is one of the most important things during recoveries, used for trap settings, tanking, and bingo/divert.
If you are able to add a feature in the GUI for bingo and fuel states, maybe it is possible to add a MODEX.
For example MODEX: 100 Tank: 3.8 Bingo: 2.7, and vLSO would call via the automated voice "100 your signal is Tank". Not sure what you are using to generate the automated CASE calls, but I assume it can call numbers (e.g. 100, 204).
I'll also grab some more ACMI files and send your way for the SHB.