I had posted this feedback on another thread, but I'm not sure how much if it was seen. So, just in case, I'll post it here as well:
Bugs I am seeing:
- Feedback is being sorted by oldest first. Newest first is probably what most people would expect. 
- I'm frequently having the edit quantity popup automatically close itself, despite not having hit Apply. I'm not sure what is triggering it, but it is crazy frustrating.
- On trading opportunities, I had this listed:
Kyle Roen United States - Altus 24 41
That is, I can get 24 and give 41.
But when I went to his profile, I could only give 2, not 41, because he only wanted foils. The second number seems to be frequently inaccurate, though, regardless of whether they only want foils or what not.
Feedback / Requests:
- It's still quite hard to find people to trade with, if I'm looking for a specific card. For example, if I'm looking for a Abrupt Decay, there are be 360 users over 52 pages (!!!), of which 90% of them have 0 feedback and don't mail trade. Sorting by proximity to you is really only useful if you only do local trades. It would be nice if I could simply select which countries I'll trade with (Australia, Canada, USA), have the list ignore countries not on the list, and then sort the list by feedback count or recent activity. Paging through 52 pages (*sad exclamation point*) of users to find the handful that actually trade is a really painful slog. A toggle to choose between Proximity, Feedback, and Activeness would be probably the most useful upgrade possible.
I had also proposed -- maybe a couple years ago -- simply having a minimum feedback requirement in one's settings. At the time, it had been a quite liked idea, but it seems to have been passed over. Basically, "0" would be the default, but if you set it to, say, 5, then only people with 5 would show up in the "having X in tradelist" list.
- It would be nice if my Friends page could show me the amount of available trading opportunities I have, just like I get when I view the root of the site.
- Speaking of which, it would also be great if the "Trading opportunities" panel wasn't just hidden on the main page. When I first started using the site, it took me over a month to find out that it even existed. I have friends who are constantly surprised by it. It would be so much more awesome if Trading Opportunities was simply its own page, along with "Trades", "Inventory", "Tradelist", etc.
- It would also be great if I could use TCGPlayer Low in the trade itself, where everybody could see. The average is frequently terrible, especially for cards that are dropping in value, such as when they recently rotate. Right now, if I set my preferences to TCGPlayer low, in an individual trade, it shows me the low price and my trading partner their preference, which is usually the average price. Further, the totals get all screwed up. Almost all my local trades are done by TCG low, because it's far more representative of what we would actually pay.
- Having some way to list cash on either side of a trade would also be handy.
Otherwise, thanks so much for all your hard work on the updates. The improvements are all wonderful!