If there was a problem with the use of Kzinti in a Trek-derived setting, it hasn't stopped ADB from using their own take on the Kzinti (cat ears, no tails, sentient females, Kzinti/Kzintis instead of Kzin/Kzinti, two genetically-related, yet utterly despised, rival races...) in their own works.
And even though the Kzinti Hegemony in the Star Fleet Universe is a very different entity to that seen in other settings, it's still one which has part of its derivation used with permission...
And even though the Kzinti Hegemony in the Star Fleet Universe is a very different entity to that seen in other settings, it's still one which has part of its derivation used with permission...