One complain about the game I have is the online shop mode.
I personally think its neat as it lets you get LOTS of money as well as find rare items and weapons, but I don't like how its handled.
Here is how it works; you open your shop, then it connects to Nintendo Wifi, then it waits till it finds people to browse my shop. That can take a while. But here's what bugs me. After I spent minutes finding someone, I get some people to browse my shop. They look at my merchandise, decided that its too expensive and leave, and shop mode ends right there...Yeah, the minute a client leaves you have to disconnect and if you want to try again you must do the same process all over again...
While it isn't as tedious as in other games, I wish they would allow you to keep your shop open as long as you wanted and let people come in and out as they like. Would've been hard to do, yes, but it would've been more convenient than re-connecting every time a costumer left the shop.