guess what this is?

[A Bad Feeling]

2 extra spaces isn't good enough , they should revvamp it sinse its such a rare drop , maybe 12-14 Slots?

I though about this matter earlier today and if they do raise Krampus Sack capability people would farm for it like crazy since it is much better than your everyday backpack. By not letting it be some kind of super upgrade for the backpack the developers don't encourage farming it that much, which it's great, I think.

[Nxf7]

2 extra spaces isn't good enough , they should revvamp it sinse its such a rare drop , maybe 12-14 Slots?

I don't think they need to change it one bit. For starters they only just fit those extra 2 slots into the UI. Secondly I love items that give a little bonus but are hard as hell to get, overcoming the challenge is half the fun. I hope they add more of these kinds of items.