Why not make a new gun

The new hemlock is great. I love the silenced aspect and also the noob tube. Only issue i have is why change a gun. And not make a whole new gun. I didnt mind the old hemlock. I would choose it over the nem sometimes. And whats with the re45 like we need another charge weapon. Or burst. I liked the re45 light weapon. I get it was like a r99. But you could have just made them dual wield and lower dmg and dps a lil. Boom. Sounds good to me. Anyway. My opinion of course. 
also. Anyone on xbox d4 or 3 that has over 10k kills wanna play ?