They annoy the hell out of me, and here I am posting one. Such a hypocrite.
Anyway, I'd like to see someone code up the ability to put music into Spring. Not just randomly playing music, but playing certain elected tracks according to the gameplay, like TA did.
Apart from porting the original TA music (or getting Jeremy Soule to make us some new stuff...

Now, this thread isn't for discussing what would be good music to put in.
What I'd rather like to see is the coding to be so straight forward that it reads from a directory called "Soundtrack", in which there are subdirectories called "building", "attack", "losing", "winning", "tension". Then a player just puts the music he wants in there, and Spring randomly selects a track according to what the program determines is the right mood music (running a similar algorithm to the original TA).
The idea being that with the code in place, people can release their own soundtrack music in a zip, and others can download it and switch and choose to their hearts content. Equally, mods can specify their own music (get John Williams for SWTA), and so on.
The most important part of any soundtrack mixer is that it takes up as little CPU time as is possible, so that I am able to play my soundtrack online, which I was never able to do on OTA, as it often slowed down TA, and made me drop behind and lag.