pouches and rare items

are there better pouches other than the 5 item one you get in pre?
i noticed there's some emtpy space next to the belt pouch in the inventory.. could that be for more pouches?

what types of rare items are there? so far i've heard blue, purple and yellow. whats the difference?

You can buy bags for 100g each post searing. And even later you can buy kits that expand the bag sizes from 5 to 10 slots. Perhaps even larger later, I'm not at the end yet.

I found a purple salvageable item today (not a weapon, but one of those "salvageable armors droped by charrs), but I was wondering, should I wait until I can get a Expert Salvage Kit to use it on? or should I just use the normal kit and hope I get something very useful?

YES WAIT!

I wish that I would have waited because you'll usually get one of the 7 normal boring salvages. It'll be worth it to put it in your storage.

Ah thanks, I'm almost at Yak's Bend so I guess it's the perfect timing for me oo;