1. bacause many of the suggestions have been brough up over and over again, fusion, kaio-ken ect ect. People need to read the stickeys.
2. for a suggestion to be implemented it takes ALOT of work. look at most of the suggestios around here, many are (for half-life neway) unfeasible in terms of work and output.
well thats how i see it, but some suggestions have made it into the game. kame-torpedos were suggested awhile ago, melee where people fly into moutians (again alpha days from b4 the melee system) buus candy attack (alpha days), ect ect.