I want plot/character driven games like RPGs to be a curated & carefully designed, plotted, and paced experience.
I want speech & narrative to be scripted! It means someone sat down and thought about the experience it produces for the player. It means a real voice actor has performed it, putting the right emotion and pacing into the line.
I don't want AI generated stilted dialogue, uncanny valley speech, etc.
And I also don't want an extra few hundred watts of power draw on gaming PCs - they're already high and in modern games the CPU is under pretty substantial load, the GPU is maxed out, and the GPU's AI/NPU style cores are being used for things like DLSS too.
Bringing in more compute resource for running speech to text, LLMs, text to speech, etc fast enough to not feel horrible is going to come at substantial power and financial cost.