@Ratore After more play-time with the game this past weekend, I definitely agree with you. The 300% weapon damage anointment is always on (at least as long as the condition is met - and for some enemies this is always!). Rakk slag still has a lot of mileage because it applies its debuff without respect to conditional health bar status, so it outperforms on any map that has enemies with health bars, but the 300% one definitely gives it a good run for its money, even on those same maps.
It just seems a little silly to give every VH access to such a significant anointment as the 300% one, and then to have the Fl4k-specific ones kind of fall by the wayside. But I guess that seems to kind of match some of the way they have treated Fl4k in game updates generally (i.e., kind of a “hands off” approach).
I want to also say that in gameplay, certain COMs, such as the Deadeye and Rakk Pakk, are outperforming other Fl4k COMs because of their special effects, which would not necessarily have been the case before M2.0, so I am grateful for that. I always liked those COMs but could never make the case for them until now. Maybe one day they will fix the Stalker COM to work 100% correctly and it will have its day in the sun too!