I am sorry, but I totally disagree with your vision of a starting player.
I don't think it requires primaries at 17 to make a good starter player in BBBL, and I should more focus on multiskilling and overall balance.
These players are cheaper, thus enabling the dedicated trainer into pushing their primaries forward if they feel they need it, without breaking the potential barrier. And they get the job done, nothing fancy of course, but mission accomplished for a reasonable price.
Check my own team, my starter C costs 65 k / week. OK, his average perf on the season is 14, which is ridiculous in comparison with Claeys who is a confirmed 17. Except that the latter costs 3 times more per week ... When calculating spent money / performance, it is just not worth it.
If you want to win the B3, there is no room for Sekulic, but if you're in a tanking mood these players are an invaluable asset, enabling you to win your games at a lower cost.
Now, that's true, the starting 5 isn't so impressive, but saved money can get you a decent bench also. When the opponents' 200 k monster is out on low stamina, a good benchwarmer will always get the better over a crappy one.
I'm not claiming THE truth here, but MY truth of course, there are several ways to reach success , that would be boring a lot if everyone had the same strategy. And anyway no matter what yours or mine is, only Joe wins at this game :p