The design is that it impacts defensive rebounding but does not impact offensive rebounding (and in the game engine the two are calculated differently, so despite their sounding similar, it takes some creativity to make this mistake the way our engine is written). I'll check if we made that mistake and let you know if we did. I like the idea that offensive tactics impact offensive rebounding as well. It is likely too late for us to make that change for this update (it's easy to code, but we need to do a lot of testing to ensure it's properly balanced) but that's something you'll probably see in the offseason update.
- choosing a 2-3 tactic improves defensive rebounding- as a result of the improved defensive rebounding, the AI tends to see that the current lineup is a very effective one for rebounding and so favours those players, as well as making adjustments that take advantage of the good rebounding
Moreover, the coach during the game makes in-game adjustments based upon what's going right and what's going wrong, and those adjustments again tend to increase the rebounding at both ends. This adds up to a smaller bump than you were getting in defensive rebounding, but I do think it adds up to a non-zero bump, and one that's a bit complicated to think about how to adjust, because what's happening in effect is that the coach is basically realizing that his team is rebounding well and is trying to take maximum advantage of it.
a) 2-3 zone improves the defensive rebounding of all players.