[Primed Pressure Point] with [Sacrificial Steel] actually does slightly more damage than [Sacrificial Pressure], but you really could go either way. Cold progenitor element plus [Primed Fever Strike] equals lots of Viral, and with slash being the other main damage type on this weapon, that's pretty much perfect. [Primed Reach] is a personal preference, but if you use another elemental damage mod instead, then you'll want the Progenitor element to be heat, not cold, for the same reasoning as many of my Primary and Secondary weapon builds. The fact that the decay of the combo counter pauses when you switch to your ranged weapons makes the Tenet Livia ideal for a Blood Rush/[Weeping Wounds] build. You might think [Condition Overload] would be better, but with so little damage in impact and puncture, it's unlikely that those status procs will ever trigger, meaning [Primed Pressure Point] is the more reliable choice.