With running multiple tactics, many of our guys are already built to be able to run inside and outside tactics, as long as they are used appropriately. So, this would not necessarily require call ups all the time. Also, I understand what our strength is and I'm not saying we constantly change tactics, what I'm saying is that I will have my mind on the matchups and if the situation calls for different tactics to be able to compete then I will do it. I will answer more specific questions to this if you have them, but in general, different tactics won't require call ups all the time.
For the second part, the goal isn't to make a whole bunch tweeners but I can see where you might think that. Players would have an identity to them specifically made for a purpose. Example: Defensive SFs, Outside bigs, inside guards, pure SGs, offensive oriented bigs, etc. They have an identity and will be different from each other. At the same time, we will still need types of player builds we have now. It'll be the combination of the two that will help us move forward.
Just a quick example of the past:
We knew we were outmatched and the opponent had gone 2-3 in the past, but instead of taking the chance going outside we would hear everyone say "stick to our bread and butter," ala go LI and M2M despite being outmatched an low chance of winning. Then, what do you know, the opposition would go 2-3 and we lose. The losing isn't necessarily avoidable, but we can take actions to raise our chances of winning.