This is a good question. The gen2 folks are pretty proud of all that fancy new tech hardware but nothing beats a good ole manual FAS. The regen process is only about 30% efficient and slows the car down a good little bit. You should only regen if you are stopping anyway.

The valve closing is a good idea but you are still generating resistance even if you are not burning gas.

Coasting in N with the ICE on does burn a tiny bit of gas but you can save this amount by doing a FAS. Someone else will need to go over the details required to safely FAS a CVT. If you can do it safely the FAS is the best option (FE wise) because you are not causing any extra drag and you are not burning ANY gas.