I fail to see the purpose or point to bringing BSK/FT/ASN brooches to the cash shop then removing it the next 2-3days. Honestly, you would gain more if you just introduce it and leave it there permanently. These brooches are limited items like costume and should not be treated like one.
There is also the "slumbering stones" or the soul stone tier 2 which you introduced back then and removed them. Why did you even removed them? This literally screws up the new players who missed out. These kind of features should be available anytime for everyone as they provide significant advantage. It's honestly ridiculous how I see older players selling a bunch of those for billions when they obtained it for free.
If you are going to continue doing this then do it on items that provide no significant advantage whatsoever.
So can you bring them back? Permanently?