+Vigano needs to be conditionally consecrated. Extremely important to reassure the faithful.
+Vigano does nothing to help out the Resistance Bishops in administering the Sacraments. He prefers to hide away in his secret location and send missives out.
The only way any bishop can be considered an heir to +Lefebvre is if he is descended from him in being a bishop. Anything else is pure sentimentalism. Even if it is +Williamson who says it.
I’ve collected Viganò’s entire works, and the only sentimentalism I’ve found in them is the recent comment on the death of Ratzinger. Human weakness is…human. Jesus and Mary once walked the earth, but ever since, nobody has been perfect.
Regarding helping the resistance bishops, yes, that collaboration would be awesome, but Vigano has his gaze set higher, to pull the entire Church to the right, and he knows the minute he publicly aligns with the Resistance (the dirty schismatic h0Ɩ0cαųst-denying blah blah Resistance), he will lose 95% of his influence, since all his good teaching will then be dismissed with cursory ad hominems.
About his episcopal consecration, I saw a letter online from +Tissier regarding +Lazo saying that despite his lack of consecration in the old rite, he could still be used for confirmation (and in fact he was), since his priesthood was undisputed, and in necessity confirmation can be delegated to a simple priest.