The thing with the fouls is, it's not a new rule, it's just the refs enforcing the same rules that have always been in force, they just stopped calling fouls for some reason over the last decade or two.
I don't think it will take too long for teams to adjust. If nothing else, it should lead to better flowing, high-scoring basketball once teams figure out what they can and can't do on defense.
I watched Mizzou tonight, we only got called for 14 total fouls, no single person had more than 3. Didn't seem much different than usual, but we also don't run a high pressure, pressing defense anymore like we did a few years back.