agreed. Why lock something that has no gameplay tied to it to a pack?
I think they are testing it out - Events started as everything you unlock gets added to base game. Then they started adding items you unlock being pack exclusive.
I guess now they are testing out locking things that is not actually pack exclusive to packs as well, like that dress. Maybe next event there will be shoes locked, or a hairstyle, or shorts... Maybe furniture that is missing from sets released in packs, you know how there might not be a shower in a pack you bought but a toilet. Well if you complete the event you can unlock it! Wouldn't that be generous and lovely?
While it is annoying to unlock something you cannot use, I can understand when it is for packs you don't own that have gameplay like the thing from B&H and as you mentioned horses. Also kind of nice to get stuff like for C&D, because we will never get anything for pets in any other way.
But to lock that dress behind a pack sets a precedent in my opinion, and not a good one. The events have already devolved over the years from exiting and interesting with gameplay, to point and click text quests. Now we just need to wait for the already devolved unlocks to get worse.
I understand they are a company and they need to sell, but this is not the way to go about it. Look at the companies/ studios people love, they will buy whatever whenever just to support. Because the company is not trying to trick them at every turn (we make what you love and you buy - simple. I guess maybe made with love as well, but I don't know how many TS4 developers can say that :/ ), they are transparent and they fix things. Everything about the Sims 4 is about making more money for less work, less satisfaction, less everything
Don't give an inch and take things aways - like boyfriend/ girlfriend/ husband and wife being removed after years to then be a pack exclusive with Lovestruck, or having a child with the Grim Reaper was possible in BG but now (I am told) is locked behind L&D.
I love the sims. Always have and always will. But it is frustrating when things get worse, devolve right before your eyes. And there is nothing you can do about it.