For real. Shroud and Ward are interesting because they make you make decisions. With Shroud you're making trade-offs during deckbuilding and with Ward it's during the games. But Hexproof doesn't force any decisions. It just says "sorry, no interacting". I can sort of see Hexproof being okay on instants like [[Tamiyo's Safekeeping]], but even then, what percentage of games would actually play out differently if that card granted Shroud instead?