Just a personal opinion, but I think sellers should be able to specify reserve prices. I can see why auction houses might oppose this, as it would drive away a number of tire-kickers. With a reasonable reserve, the seller has an idea of what he/she might get as a minimum, and the auction house will certainly try to push above it. If it doesn't sell, it can be re-listed, and maybe adjusted. But selling way below value because of how an item is listed or when the sale takes place, is not the best advertising for auctions, as far as sellers are concerned. And without sellers, there aren't any auctions.
I have bought items at auction with and without reserves. The reserve changed the starting point, but it didn't deter me as a bidder.
I can sort of see the argument against self-bidding as a way to stop sellers from benefiting from artificially raised prices. It also carries a risk to the seller, who might win a bidding war in which they intended to lose. As to the auction house, doesn't it win either way? Maybe I don't have enough information on this to have a firm opinion.
For antiques, which is my main interest, I wish auction houses had better descriptions and provided more pertinent information. Instead, they often sell high-end items with the same inattention to detail as selling a worn-out Cooey.