The real use of this is simply entertainment for those who have extra money to spend. Sitting in the doctor's office waiting for your wife? Log on and browse the AH. Maybe buy an item or two if they are cheap. You simply play it instead of some other game you would normally play on your cell phone.
It's not intended for people who have essentially turned their characters into AH bots that require only a press of a key for 100s or 1000s of transactions. Despite all the forum posters who brag about their AH prowess, such players are very much in the minority.
Problem with people in this game is that they want to abuse everything. They use every loophole they can to make the game as easy as possible for them. If they had their way, they would hit the space bar every so often and they would watch their character perform perfectly. Just download it, walk in, and free loots. People are already developing mods that show your character where to stand at all times and show them buttons they are supposed to press at any given time.
If anything, Blizzard should cut back on what mods can do further, limit all characters to 200 transactions/day in the AH, and let the game be a damn game. You can read about it like a book for a video game but you have to do the work on your own.
As for people whining about money, this happens every single time Blizzard charges money for anything. Go down the list of news and every single time it's an issue about money, they whine. If they had their way, Blizzard would pay them and they would have a full staff of programmers to change the game anytime anyone beat them in PvP so they could win every single time.
People are greedy and selfish. They always want more. That includes Blizzard (more $$$) and customers (we want it all and we want it now). It's a balance of these factors. If Blizzard gets too greedy, we can get more from someone else and we take our money with us. If we get too greedy, the company goes out of business trying to please those who can never be pleased.
There are plenty of people who are eager to take Blizzard's place. If Blizzard doesn't deliver consistently, they stand to lose a ton of money. But they are also a business which is designed to make money. They try things to please people that, in turn, give them money for pleasing them. If people want to play AH on their cell phone with a transaction limit, how does that hurt the game anymore than it has been hurt by the people who bot the AH and essentially control whole server markers?