well, the stickied rules are too general for me and dont really cover the bases on spec weap submission requirements (imo).
So i was thinking you might make them more like this (these are the rules as i understand them):
1.Weapon must be realistic (must exist in real life)
2.Weapon must be worth the credits. Don't post an idea that isn't that beneficial.
3. Weapon must be effective on most if not all maps. this goes in accordance with rule #2.
4.Weapon must cause some kind of harm to the opponent, such as loss of an advantage or loss of health.
thats about it, feel free to add more