The Google Talk people literally never tried to implement any of it as far as anyone could see publicly (eg. stream management, compression, client state indica

The Google Talk people literally never tried to implement any of it as far as anyone could see publicly (eg. stream management, compression, client state indication, etc.). I'm not sure if it was a problem with discoverability, or if they just didn't want to, but their feedback was always that things they needed didn't exist, and then stony silence when someone would point out the thing they needed.