That is actually the same logic as my suggestion of combining Abou with a vigoras weapon. I would argue that works better with Abou than with pride weapons, because for Abou, you are sacrificing eidolon elemental for special attack, which is its own frame, separate from vigoras as well. For pride, you are sacrificing base assault for hp-dependent assault (I am assuming a base case of 9x assault weapons), which is not a good offset to vigoras. Consider the following data points (double-check my math, but I believe I have it right):
a. 9x SR assault (I will ignore elemental frame since I am keeping that constant in all scenarios here): 117% assault = 2.17 dmg
b. 1 pride and 1 vigoras, 7x assault all SR: 101% assault, 12 pride multiplier and 16 vigoras base = 2.25 dmg at 100% hp (~4% higher than base case) but from ~85% hp all the way down to zero, you are losing up to 5% dmg
c. 2 pride, 1 vigoras, 6x assault all SR: 98% assault, 24 pride multiplier and 16 vigoras base = 2.22 dmg at 100% hp AND at ~0% hp (~2% higher than base case) but between 25%-90% hp, you are losing up to 4% dmg. You need to have a very specialized build to dish out most of your dmg OUTSIDE of the 25%-90% hp range
For reference, my Abou + vigoras calculations from before used 170% elemental and 117% assault as base, and 130% elemental and 104% assault for Abou + vigoras. There, the dmg loss never exceeds 2% but the upside can go to 20% at near death. It relies on high elemental and the fact that assault, elemental, special attack and vigoras are all separate frames. If your elemental is lower and/or you are sacrificing a 100% eidolon instead of 40%, the numbers look awful, too.
Just curious, are you MLB-ing two pride or two vigoras weapons? If two vigoras, what does your light build look like? If I did my math right, you have to be pretty confident that you can consistently keep everyone above 90% hp for it to be worthwhile. Not even my Joan + Tish + Sol AW build can manage that unless I bring LT as well AND her blind lands. Do you have a lot of ascension weapons such that even Joan's regen can keep everyone healthy from regular attacks and Sol cover OD or something? I guess if you have a lot of defense accessories, that will probably help a lot, too.