Black Hammer is the must have of the whole CE lot. And it is definitely a must have, on par with Fatebringer, VoC and Vex. It is the epitome of an endgame sniper. As far as the others, Id say WoC is on the cusp of must have. I mean, it is the best Void primary in the game at this current moment (Company of 2, I know. Not hard to beat out Epilogue, but it is a must-have, go-to for anything void related). Plus, its DPS is on par with Fatebringer right now, and still will be until 32+ content is available as the damage cap has both neck to neck (300 vs 365 does not come into play in level 25 and below activities, and in endgame activities, WoC bridges the gap by delivering comparable DPS by having a higher fire rate). But the rest of CE weapons, I will agree with you. None come even close to overtaking anything from the Vault.