so much to unpack here:
saying 'demon hunters' was a success from player metrics is the most tongue in cheek thing i could have ever read. the class was forced into top tier and then oppressive in every format it's ever been good in, so if player metrics just means that people are playing it then ya that tends to happen when you make a tier 0 class out the gate
no rush for a new class after they butchered the last one's release
champion could have been neat but tricky to balance; really not that different from a hero card with a passive like the 10 mana Reno card except they take a spot on the field instead of your hero power
reprints don't make any sense to me from anyone's perspective: it invalidates people who already have the card, minimizes (at least fractionally) interest in a new set because fewer of the cards are new, and because of the prior point deducts from sales when a small tweak into a new card would essentially be better for all parties involved. if they want an older card to be back in standard, just reverse-HOF it