1) New players from the US are not treated equally to new players from small countries. We have to start in DV, they get a cakewalk to DI in a season or two. There other games out there where new teams are put in the same division, regardless of nationality. These games are attracting new users while BB is not.
2) The lack of statistics. BB has, at best, rudimentary statistics available. The lack of team defensive stats and player +/- stats is seen as a sign that the developers don't really know how to put a sim together.
3) The economy. Day trading is abhorred by players who want realism. However, the economy of BB almost forces you to trade to support your team. FOF/OOTP type of people want to build their team with draft picks by training and developing the right kind of players. You can't do this in BB because you don't see enough draft info to target the types of players you want to have. And I don't mean simply claiming the 'best' player, rather distinct player types.
4) The player development model that forces you to play out of position in order to get training in, for example, OD, ID or passing, is seen as a bad joke and a horrendous design decision.
5) The 'World of BB' is a reflection of soccer, not basketball.
6) Too much of BB smacks of Hattrick, as if the game had been lifted whole from that sim, had its soccer engine snipped out and a basketball game engine grafted on. I remember from my early days that this is close to literal truth, but no one speaks of this any more in the forum.
Ad1. I do not agree. BB it is hard game. That is why so attractive, even for players, who aren't basketball/ NBA fans ( like me ;) ) In Poland we saying : Easy come easy go.
Ad2. I agree with that. You are right in one hundred percent. I would add here: new kinds od stuff members, and add more things about describing player, for example: nature of player or charisma ( something like in rpg games )
Ad3. Economy, what can always be worse. I hope I will see some money for friendlies or/and cup matches.
Ad.4 I do not agree. Honestly, this for me one of the the biggest plus BB. The player development model that forces You to think and making uneasy decisions. Alwayes few steps ahead. If You want to have unique player, You have to be ready for hard and long road.
Ad.5 Maybe BB is reflection of soccer. I don't know;). But is not reflection of European football;).
ad6 Hard to say, never played but heared and I know less than more ;) that it is about football;)
Point 7. I would add more internet marketing work for BB stuff, because I remember that few years ago there was even big article in th Polish most popular sport newspaper. The author, a journalist was invited to play. Detailed is described. In the half year to 10 000 players in the HT, Poland had 20 000. Of course i know it was not only one reason. but...HT now works with one of the largest Polish Internet portals, link to them is next to the main page of sports news.