So, hyped up by new season and crazy new cosmetics (wings is arpgs always get me) I’ve just bought Vanquisher pack, cuz’ that lightning armor and wings rocks. Sadly cuz’ of hype, I didn’t read, that more expensive packs include cheaper ones. So, as Cher sang, if I could turn back time, I would have bought Legendary one, but sadly it turns out I can’t… 
And now - expecting me to pay full price for items I’ve already bought is silly. But if there was option to upgrade… I would happily pay for the difference without the moment of hesitation. Maybe it’s good idea to make that option… 