This software is..

[vesper8]

.. nothing short of incredible! That you were able to make it work with any game as smoothly as you did is truly remarkable.

I feel like too few people are even aware of this amazing approach or else it would have really blown up by now! If there was a really easy to use installer and if it saw further improvements such as better synthesis of voices based on NPCs, for example if it could synthesize a voice and speaking style similar to Keanu Reeve's without being completely Keanu Reeve's own voice but just very similar. I can see a bright future for this solution, you haven't peaked yet!