A good idea for a map would be a surf map or one of those trade maps but with an objective.

An AA-12 for the heavy, let me read my notes. Name: The Chainsaw, Class: Heavy, Slot: Primary. Pro's: Does 25 damage each shot, the walk speed is as the medic's/snipers while equipped. Alt Fire is a tiny deagle (Damage is about the same as the shotgun or panic attack, mag is 5, max ammo is 30? Not sure about that) max ammo is 300, instantly shoots. Cons: Cannot prepare for firing as you cannot rotate a barrel that does not exist. It has a mag of 25 shells. Laser sight that tells the enemies where you are aiming, Cannot headshot, and cannot destroy stickybombs.