Projected feasibility: 10/10
Impact: Very impactful for those who want to experience the realism of having big guns firing
Detailed description: As the title says, we all know that when the guns fire, they still sound flat when the tinnitus is somehow simulated but muted; my suggestion is for the audio to be essentially rawdogging the operator's ears.
Truthfully, this option can be put in the Audio Settings marked as "realistic gun sounds" with a warning stipulating that the High Command is not responsible for hearing loss or speaker damage.