Since the main aim of the rom is the minimal size following are my suggestions:
1. Minimal gapps (Stripped down and should contain only google play)
2. Voice search, video: should be removed, as we need to anyways install mobo or similar player for viewing mp4 files of the camcorder. Also stock voice search doesn't work hence redundent
3. CM9 Launcher may be replaced with suitable low size laucher such as Holo
4. Live wallpaper and stock wallpaper may be provided as zips (not flasheble zips) so that the user can use only required files as per his choice and burden on rom of carrying these files will be removed.
5. Boot animation: No boot animation, it will save precious space on system partition, also rom will boot faster.
6. Sound, wallpaper etc: Should be based on Dragon Ballz theme, as this is Arjens project.