That's only 3 mana and there's no combo attached to it. You don't build a deck around it. I am talking about stuff like Tinker's Sharp Oil that needed set up, costed 4 mana and required a combo that you built your deck around.
And Shadowstrike is just another tempo removal for Rogue, they already have enough of that. I guess if you want to be playing the same type of Rogue deck from now until eternity then sure, Blizzard can keep making cards like Shadowstrike that further funnel Rogue into the same style of deck.
But I want to see more cards like Tinker Sharp Oil that enable a new deck type. And that's probably not going to happen with Prep staying as is.
Sword oil isn't even good without blade flurry. The deck was really built around blade flurry. Oil was just another blade flurry enabler. Healbot let you play more greedy with blade flurry. The deck is just not oil rogue without blade flurry and now blade flurry is terrible.
Shadowstrike, yes it is a piece of removal, but it's an example of a strong spell card that fits the rogue identity of cheaper, powerful spells. That is what rogue should get.
But we also do get other strong cards that enable other deck types. It's weird reading you say that we'll be playing the same type of rogue deck forever, when we just got legit burgle lists from the last expansion.
Rogue can also still do a strong weapon rogue type deck, or a straight up tempo minion based plan, but the reason these decks simply aren't played is because they lost a key card. What exactly is the point of someone running strong weapons if it costs so much health to actually gain a board advantage off it? You can't really get ahead on board with weapons without taking too much health damage and you can't heal after getting ahead on board so you just die.
Because there is no more healbot and because blade flurry is bad, there are so many rogue variations that aren't being explored. It's really bad... I've explored so many rogue decks since blade flurry was nerfed... it's not that rogue lacks stuff to do differently, it just lacks the blade flurry that makes them do other stuff well enough.