pay to win...what? What object is there in game (with ingame effects beyond cosmetics) that is literally impossible to get without money? Everything that exists as a item that has been found is either in Standard or Hardcore, and may show up in Perandus via Cadiro too. You can find all of the normal items, the currently-existing legacy version items, and all of the non-league exclusive uniques there. And for the league exclusives there is Zana maps (depending on the currently available league modifiers), or if you insist on needing one now, right this moment, you can trade for it if someone is selling it.
They didn't even specify trade (with public premium stash tabs only, cross-instance), they said trade (no qualifiers) between instances. The only reason I'm even paying much attention to trade at all is to see how the public tabs work, I'm not expecting to get anything that leads to uber gg BiS faceroll Malachai in merciless as a low-life MF melee witch paid benefit out of it like you're making it out to be, miljan. (although I would not be surprised if the seperate garena realm has that. I've heard nothing good about it the few times I've seen it mentioned.)
The trading improvement will make no difference in whether I make it to lv.80, or whether I find cool things, whether I get through a particular labyrinth layout or not, or whether cadiro tries to rip me off selling a unique for thousands of perandus coin or just another rare ring for 10 coins. At best I might get a few alts out of the tab's contents after it doesn't sell and I just vendor it all. I could get more than that just running around playing the game, ignoring trading completely.