I've said it all along that SB was never broke but I with them altering Shotblocking some I look at it this way. Shotblocking will work more as help defense and with players rotating on defense, especially with zone defense. As far as man to man defense, I think it will actually make it even stronger because of more help defense which will only make man to man defense even better against LI if you have a center with high Shotblocking.
A an example, look at the Indiana Pacers. They play man to man defense but Roy Hibbert stays in the paint as much as possible. Now, on BB, I see a base offense becoming a lot better because you could put a good outside shooting big at the center position to take the shotblocker out of the paint.
Many of you also say that a player with 12ID and 16SB would only be good enough in D.III, but I'm not so sure about that. It would depend really on what type of defense you intend to play. A 13ID an 13SB has been very successful in the past in D.II and that's with the current SB. With them altering SB more, I think a 12ID and 16SB could be even more successful. SB alters shots and any shot that is altered instantly has a lesser chance of going in so an altered shot is just as good as a defended shot. There's no proof behind this except for own ovservation of how Shotblocking works in the current engine.
What I will be more excited to see is how effective 2-3 defense becomes. It already reuired SB on guards(which nobody had so everyone said it was broke) but if they make it so that players are more effective with less SB then we could see offenses struggle to score which could lead to owners training less defense and more offense.
I think this little change could change the overall effect of how people train their players. It could be great overall because I don't think players need such high defenses as it is because it leads to less offense already overall.