I accept the apology. You are now officially on probation
As for the new taxes, there are a couple of loopholes in your theory.
The taxes are calculated and store at the moment of being placed on the transfer list, therefore all of the players need to be listed before the first one is sold. This means that they cannot be effectively re-listed, which is what the day traders do. A lot. This means that they only have one shot at it, and if they don't sell most of the players, they will be at a loss.
Additionally, the taxes consist of two parts: number of transfers and time of acquisition. If they (the daytraders) list a player soon after acquisition, the time variable part will still be great (read: no or low profit). If they don't list right away, they have to pay salaries and will still have to pay at least some tax. Again no or very low profit.
Also, to avoid having a large number of transfers affecting their tax rate, they would be able to do this only once per season + 1 week. Which means that they will have to sell a week later for every time they do it. That would take a lot of patience and restraint, all the while risking not to profit anything due to the facts I already pointed out.
To answer the specific questions:
We are not against taxing profit, but since we just had a big change in the tax system, we would first like to see if and how it works. One season wouldn't be enough. Also, taxing profit has one big problem: if a daytrader sells a bunch of players during the season, he doesn't have to worry about selling that valuable SF he bought for a large sum a couple of seasons ago, since he will at least receive the amount he paid. This is unacceptable, we want daytrading to affect all the transfers of a daytrader in order to teach him a lesson, not to let him run amok and then suffer no consequences when it would really hurt.
The autobid is a feature which would greatly reduce page views. I'm not afraid to admit it. Buzzerbeater is free but not a charity. We have expenses which need to be paid for by Supporter packages, and, yeah, ads. You remember those things which you so conveniently blocked? Well, they pay for the game mostly. More seen/clicked ads, more funds for BB promotion campaigns, better servers/equipment, more beer for me...
You see, it's not that simple. Would autobids be convenient and useful for our users? You betcha, and that's why we can't even make them a Supporter only feature, since we don't want to turn BB into a pay-to-win (Supporters don't see the ads anyway). But at the moment, we can't turn it off since it would hurt too much financially. We'll try and think of something though. And we're open to ideas, of course.