I guess besides all of the Adventure chosen potentially getting a Bond form (And I don't actually see why Sora would be an exception), I am not sure how much sense any sort of "dual" Bond form would make. Like if some bond form can be achieved without being super exceptional in one single attribute but by being 50% exceptional in two, then with that logic literally anyone should just be able to have multi-bond forms from a mixture of like ten different traits or something... So I'm not sure where a line could be drawn.
Davis has a third one, so they could just use miracles.
But how would that qualify as a virtue?
It wouldn't necessarily have to be a virtue. Without some convoluted mental gymnastics, "light" is not a virtue either and no one tends to complain about that.
I take that and the Digiegg of Destiny (Assuming it is canon within the continuity of the anime.) to be Digieggs particular to crisis states.
They could be, but the worst case would just be that any bond forms based on them could also be exclusive to crisis state. From the limited lore we have on them, Bond forms in general could already be inherently achievable only in a "crisis state" ...in which case it would make no difference.
Nevertheless, even if they went that route with Davis, where does that leave Yolei, Cody, and Ken?
Wouldn't Ken be the one who causes the least issues? After all, he's the only character debuting in 02 with his "proper" crest of kindness.
And I guess the same goes for the design of a potential Bond form as well; With Stingmon already being fairly humanoid, he could be fairly easily redesigned with that in mind.
But in the end I don't think there'd be anything wrong from a conceptional standpoint if the other Zero Two characters jszt wouldn't get Bond forms.
The whole "Homeostasis personally picked you for being ultra unique" does not neccesarily apply to them, really. Minus being
compatible with Digimon species that were themselves compatible with the ancient Armor shenanigans there isn't really much to suggest that they are any more inherently special than any of the other dozens of children that were chosen during the Diablomon fight and other public Digimon incidents.