I quite like the new system. I think the 24 hour trading probation for newly added friends should be optional. It's fine to offer that protection (in fact, I might even like it for random friend requests), but please let us choose to override it if we'd like to.
Other than that, I've been able to do quite a bit of selling (and buying ;D) today and had a good time with it. It takes a bit more effort to calculate value, but the process of selling things takes less time overall, so it evens out. I love being able to put up a few trades and just let it go. Babysitting the game for 10+ minutes every time I put up a trade in the old system was one of the worst parts of the game for me.
My trade history has been working fine, but I know others have had trouble with it, so that's something to look into.
As for sorting the columns, one of my guildmates said to click the column header 3 times to get it to stay sorted while turning the pages. I have no idea why it would work that way, but it seemed to when I tried it.
Oh, and I think some people are confused about the times given - it's no longer a countdown, it now gives you the expiry time for the listing.

