Quite a few people are complaining that the reason for various problems in-game are due to not having a decent trading mechanism/auction house. I don't believe that either will solve the problem.
If there is an auction house, that doesn't solve the trading problem for those that want instant gratification involved in a quick sale (not having to wait for a period of time to sell their stuff). The pro-farmers (farmers that make money) which ANet disallows in the EULA will probably still be more inclined to use the local channel because they simply can't wait to sell their shift-loot.
A new trade system will not necessarily work out that well either for the people spamming the all channel. The reason for spamming the all channel is because people turn off the trade channel (well duh).. People will still spam the all channel to catch the passers-by that don't have whatever new trade mechanism window open.
Most people won't realize this until after one or both are implemented. Once they realize that it hasn't stopped the spam (though maybe reduced a bit), a new level of gloom will set in. While these are good ideas, I think a 'true' local chat change may be the best supporting solution to complement these changes. By having a local chat channel that only picks up chat from people within your compass map, people will be able to selectively listen to the 'deals' or not. Quite a few traders hang out near storage or the merchants. If people don't want to listen to their advertising, they simply hang out somewhere else to chat with people. While the spammers can indeed split up amongst a town, they can't concentrate for long because people will be all across the town. If you want to hear the trades, go stand somewhere near the trader. If you don't, go stand somewhere else. It's not as effective in small towns, but then again the problem isn't as big in small towns.
I just wanted to point out that the Auction House and/or trade window that people have been talking about aren't going to be an end-all be-all solution so that no sense of shock sets in when they realize this after the fact.
EDIT: Also, what are reasons people have pro and con the traders (since this is about trade) being all connected in one single market. I would think that having the traders separated (say the supply and demand in Cantha being different than Tyria, or between Kaineng and Jade Sea/Echovald, or even individual cities based on closeness) would encourage people to visit remote towns that are usually abandoned (such as Henge of Denravi). By having a more realistic approach (the supply and demand in one part of the fantasy world being somewhat different than another distant part) seems like it would have more benefits. It would definitely encourage people to not just hang out in one place to trade. Ice tooth cave may be the next high-buying merchant, or Maguuma Stade. When the Sorrow's Furnace release came out I knew people that had finished the campaign with multiple characters that didn't know where Granite Citadel or Ice Tooth Cave were (of course with 15k armour Citadel was more likely to have been explored). Kaineng Center, Ascalon City and Lion's Arch would be frequented enough because of their location to offer cheap goods for the casual players where the more remote towns could reward people for branching out and exploring by offering higher prices for buying regular goods.
C
