Finished first 4 levels without knowing there was the OP node "Queen's blessing" hidden behind random(unrelated) passives. Only found out because i ran out of useful passive nodes to upgrade and went useless(IMO) freeze route just to spend gold.
I would expect that such game changing node will be at least visible to player, its fine if player doesn't know what this node does, but at least let them see that there is something behind other nodes.