I think everything's been covered, but just remember that even if you play solo those triggers can be valuable.
For example, RWB3s can be traded for Solo PD triggers (Light: Barren Blossom) and EH difficulty is great for quick Ex-cube Farming (~48/run with boosters) and UH grants a guaranteed ultimate booster upon S-rank (12min or less run, and I hear you can get a second from the boss crystal but haven't seen that yet myself).
RWB3s can also be used to farm 12man triggers for units with (Deus, Yamato, and Mother) Factors even on like SH difficulty as the rarity of the unit doesn't matter and you can reroll the Deband drink + carry the Nyoibo weapon to increase your chance at 4+ slots.
RWB4s can also be used on the 12man Persona trigger (Malevolent Void) to farm Void Erebite Fragments to make a Trailblazer weapon or make/upgrade Trailblazer units. You can solo this in 5+min on SH difficulty and it still grants between 2-4 Void fragments. Not a great return, but an easy farm that's pretty close to the EH drop rate (though the 4man trigger is still much more efficient).
I'll also second that some of the badge weapons have useful SAFs like Astral Soul, Phrase Weak, Sentence Arma, etc. In addition, the RWB5 Novel units have Stat 5 as their SAF where the stat depends on whether it's back (might), arms (precision), or legs (casting) and you can get stat 6 if you really want by upgrading to Liberate. You can also use RWB4s to get the materials to upgrade Ivlida units (buster badge shop) into Cleasis and then Schvelle as the Schvelle units have Sentence Might/Precision/Casting as their SAF on the Rear/Arms/Legs respectively.
And if none of this sounds appealing and you really want to get rid of badges, you can always buy the weapons because 11 stars (RWB1s) break down into 1 Ex-cube and the 13 stars into 3 cubes.