here is my idea for a tenth class. a completely customizable character.
imagine a character in an rpg, he can have several attributes like run speed, jump hight, hit box size, weapon type (exsplosive, particle, bullet etc), weapon range, rate of fire, amount of weapons, different items (like only having the teleport for example). all of which is customizable.
different catagories would have different values and adding points into one catagory will make it more expensive to add more points into another so that class could never out perform the real macoy, for example: adding points into speed makes adding points into reducing your hitbox much more expensive. you can never make a class better than the scout, just slightly worse.
or adding items from different classes would be ridiculously expensive, like putting a cloak watch and a mini sg on the same character would take up all your points leaving you with no points to spend on your stats, making you look like a heavy with the hp of a scout.