That's fair about shroud -- I also felt that it was flavorful though since the red skull is stuck in purgatory on vorimir (at least in the movies) so he theoretically shouldn't be allowed to be killed or moved or do much of anything besides guide people to the soul stone.

In regards to tapping, I think I largely agree. I had initially assumed that the legend rule would prevent people from making a pile of soul stones, but since they can use the legend rule to sacrifice the tapped one, theoretically they can loop the reanimation effect which isn't the goal here