Making space for new guns and nerfs

So as maybe some of u saw my fellow staff abdul's suggestion i would like to explain more
1.Phoenix-even tho the gun decent it's a rly rare case to see players using it and there are more options for lvling up(guillatone,rod,gungir,cerb,janus and more u get it)
me should take in consideration for better mid-high level guns in this case
2.Barlog-7-also it's a decent gun but some suggestions could be provide a more viable options or it can stay but the lever for buying could be lowered
3.Janus 11 shotgun-This shotgun is mid at best and we could maybe add a different one cause the ability is short and it barely does damage so i feel like at it's current position it's bad
4.Sting ZM-As of right now this zm is the strongest and some love it some make complaints of how broken this zombie is so maybe to balance it we should do a nerf on the zm's gravity and the lobg shot should do less damage,for example the gravity is very op it takes no time and effort for the zm to get to high places so humans aren't good on higher spots,then the long shot it's very broken cause the damage is surreal sometimes it can take out whole 200-300armor but in some case it could do less
this are some ideas please give me ur opinion on these suggestions with -1 or +1 this opinion would be much appreciated

Have a good day:)