Alright here's my feedback.
First up, good job. There are some things in here that I haven't even tried yet. The menu music was cool. Had a retro feel that I was really digging. The weapon effects were also pretty neat. Also, the little tidbit in the debrief peaked my interest into the story a bit. Nice job.
Here's some specific issues I noticed with the modpack.
You've got several files in two different VPs (intro.ogg is one, and a lot of audio). You've also got some MVPs models and maps in your modpack. Given that your mod requires MVPs 3.6.12, this isn't necessary unless you actually changed the POFs or textures. If you are including model files, also include the cache files (data/cache/XXXX.bx). Also, your audio files. Some are in WAV and some in OGG. Some of them are also retail audio, which you don't need to carry in your mod. You should, however, convert all your audio to OGG.
Your mod download includes an empty data folder, that's unnecessary. You can also make use of the
credits.tbl instead of a separate credits readme. In that same vein, use
game_settings.tbl to set your default campaign.
I was somewhat disappointed to see that you basically used the exact buttons from my mainhall tutorial. I recommend you try to create something new and different. Perhaps a button style that matches your mod's Shivan tones and styles?
In your mod.ini, include a description and forum link to this thread. And finally, your cb anims should probably be the same aspect ration across all of them. I recommend 660x300 (the sorta hi-res standard).
For the missions...
Much of your briefing and message wording left a little to be desired. Are you a native english speaker? If not, it might be worth to have someone who is go over your text. Also, be sure to use something like emptymsg.wav for message sounds. It's just a beep so that players focused on action will be reminded to read the new message.
The Destroy Bombers directive never marked true. I couldn't ever get it to mark true.
Your mission music was all over the place. Between the menu music, action music, and victory music there were multiple musical styles ranging from heavy metal to royal fanfare. My personal preference and recommendation is to make sure all your music fits within a very similar style. I've used this
site to find almost all of the music for BtA. It's free, and legal as long as you credit the music authors in your credits file.
I hope that wasn't too critical. I wrote it so as to help you learn more and not to discourage your from creating your campaign.