It seems that the "conversation" in that thread took a tangent.
From my perspective, I can see how some aspects of trading may be important to "stabilise" the bb economy and it also urges players to get supporter (it's easier to trade with supporter). However, the one thing that seemed to be glossed over continuously is that day trading is not part of any real life Basketball Team Management.
Of course, by reflecting on this and saying that it's silly to say you can't call BB a simulation game wouldn't be fair due to the complexities of real life Basketball Team Management, online games, fun, and simulations themselves (among other things).
I do think it is silly, though, that to be part of the "best", you are pretty much forced to do it. Great teams make good financial decisions as part of their strategy, but it is only a part of a larger process.
Not only that, but it takes the fun away for a lot of people who don't want to monitor the TL many hours a day. If it's the Supporter package BB wants then, in my opinion, they should find other ways to do this than turning the game into largely a trading based game for those who want to "succeed". Heck, have brainstorming sessions, ask the BB community. I'm sure there are lots of answers out there. Social learning (and investigation) is a powerful thing.
I could write more on this, but to save people having to read a novel, I'll wait to see if anyone has anything to say to this.