The topic is to give shotguns to lights, so we are in a discussion about close range combat. Since lights are the fastest of the three body types, in a conflict of close quarters, it would be better to run in and kick an opponent then to shoot form a distance.
i'de like to hear more of your response of it being easier to slide than to shoot to begin with in any case. Shooting is instant. Sliding leaves you open to take damage as you approach. (bullets travel much faster than you can slide...)
by using the word unnecessary you state your claim that the topic at hand (shotguns) shouldn't have any reason to be implemented in this way. By saying they have no reason that also reminishes them from your next half of the statement which is the action of shooting a knocked over opponent. So yes.. That is fully implying you cannot do this with shotguns.
and to tie back into the denial of the second implication by specifying lights only with such a specific situation. You have effectively stated that either A: your statement held no ground because its not unique to lights which is the class in discussion or B: that mediums cannot do this themselves. I would ASSUME you weren't discrediting your own statement right as you made it...
EDIT: I'de rather not argue over this so make your statement if you so desire but i may or may not ignore it for the sake of keeping this topic on track. No disrespect intended.