Wouldn’t those be points in favour of using FLAC?
- If the Wave is mostly there for library/listening purposes, FLAC is better suited to archival (size and checksumming) and media players are much more likely to support it than game engines.
- If Ogg is recommended for game engines, wouldn’t offering FLAC instead of Wave provide a subtle incentive to use Ogg instead of trying to bundle Wave files into your game?