Good news!!! The torch flames don't emit any sound at all (at least I can't hear them and the NPCs are talking quite loudly so volume is at a reasonable level), so the raging inferno you are hearing must be from some sound enhancement mod you use, I suppose, not BC.
We have decided not to place guards outside the IC City gates, at least for the time being. If OOO already places a Legion Guard there, that'll do for now.
Thanks for the replies and support.
After a little bit of searching in tes4edit I was able to pin down the "raging Inferno" sound problem. It was better cities related. Each street light has a flame hidden within it (its a seperate flame object) that is activated at night via a bbc script. The flame (bbcflame520large or similar) had a fire sound embedded in it. That was what I was hearing. I removed the fire sound from that flame and the problem was solved.
I not sure why my flame sound was so loud but yours was not. (i couldnt find any mod effecting the volume of that sound) It could be something to do with a setting on my sound card perhaps.
Re where better cities should go from here. As per your request for feedback/Ideas. I was walking around the imperial city waterfront admiring all the new BBC homes and npcs. It occured to me that it would be great if the new BBC npc's had a story to tell.
Eg - The bar tender at the waterfront tavern, maybe he has a tale to tell about how the imperial government and their soliders are not welcome down at the waterfront and how the grey fox is the saviour to
the waterfront folk.
Or you could have a chat to one of the nefarious types hanging out in the tavern, they could tell you about how they arrived in the Imperial City from the poor Morrowind farm where they grew up, full of hopes for a better life, however the imperials would only offer dark elves that were not connected to house Hlaalu the most menial work, so he turned to a life of petty crime and gambling to make ends meet. Similar stories like that would greatly enhance the BBC experience IMHO.
This could be down via dialouge trees (no voice acting), Im sure there are plenty of writers who would love to help you out with dialouge. (or atleast its seems that every mod team always has more people wanting to be writers and quest designers than
actual coders/ scripters or world builders.)
Good luck and thanks for working so hard for so long on this project.