Trade for B&J (I have exactly 4 dupes) or just use Revo Hermes instead and save for future meta. I would easily trade for B&J if I had their subs (only have mel) or enough MP for 2 Kuros.
Basically 4/144/1 vs 4/84/1. Awokenings pretty even, B&J does more much more damage herself but Revo Hermes will increase team damage with rows. IMO Revo Hermes have better active. much shorter charge time and double orb change is easier to control than full board change. Board lock and defense isnt usually a problem where you need more than 1.
B&J is definitely better but how much better?
Um, well, damage is definitely something to consider in all of this. 144x isn't exactly a bunch either way, AND a lot of the damage comes from B&J herself. Moreover, if you don't have any of the better subs, you may find it hard to chew through higher HP spawns. As has been mentioned many times, you are likely to find rows to be a bit underwhelming/awkward in the current environment. Also, as for her subs, she
can be run pretty well as a TPA lead, especially if you have a scheat or two. I find blue to be rather TPA heavy, so if you have, say, two subs with four or more TPA awakenings, you might be able to get there, especially with some weld equips. Another thing to consider is that so much of the damage for the team tends to come from B&J, you can really focus on utility much of the time with your subs.
However, I do think she pairs reasonably well with Jhoira (who makes up for the multiplier loss with 7x6 board and a 10c awakening on herself) OR Yuki (who adds a third color requirement, but otherwise works pretty well, 2x HP with a 25% shield and 180x damage isn't bad) would be the pairings I would be interested in.