Well we all know the classic Red Alert alarm that is from TOS and TNG that sounds everytime that we're under fire, and if you're a Klingon then it's the TNG Evac alarm.

What I propose is this: Give us the option to pick which alert sounds we hear, with the options being the various sounds heard in the shows for Federation and Klingon ships.

Here are some:
Voyager and Enterprise-E
Defiant
Klingons (sorry for the poor quality as I couldn't find anything better, but you can still hear it)
Romulan?

Promethues MVAM (for good measure )

There are more (like the unique one from Generations) but it is very hard to find some of these things....