Similar to TTS plugins for other games (Namely: https://github.com/karashiiro/TextToTalk), it would be nice to include websocket support to enable custom backends and TTS routing.
This could be used in conjunction with companion apps to process TTS requests, such as Jocys (Using the Monitor: Server function), as well as custom routers to locally process TTS requests (coqui python TTS for example).

Happy to modify and share my existing websocket listener container once a PoC is developed, as it allows for pretty robust, local (No worrying about character limits in cloud TTS APIs), GPU enabled processing for TTS.