I think one of the worst parts of the Whitestrakes event is that it can literally brick your account. I currently have over 600 mail rewards to open which makes me unable to buy anything from the guild store until I clear out my mail. The actual process of clearing out mail after this event is very tedious. There's a lot of random crafting materials, furnishing items, siege, gear, and scripts that can take over the inventory of multiple characters.

The fix to this issue is pretty simple. Instead of sending a rewards for the worthy box in the mail, send us a key or other type of currency that we can use at a merchant who will let us purchase rewards for the worthy boxes as we please. During the Whitestrakes event, the amount of currency earned through the mail should be doubled and the special Whitestrakes boxes should be available to purchase from this merchant as well. This should function exactly like the Undaunted Key system does. I think that this system would be much more flexible and it could even be used to improve Cyrodiil rewards depending on what items can be purchased at the merchant with these keys. This would also improve quality of life by making inventory management easier even outside of these events.

Side Note: Please also uncap the transmutation crystal currency. I think that buying ESO plus is incentivized enough through the craft bag and the inventory/furnishing limit increases. When our transmutation crystal limit is reached, we can't even deposit the geodes in the bank and they just have to take up inventory space on a character until we start transmuting stuff. I just don't think there's a good reason to have a cap for this currency.