[Kevin Sharpe]

I have no idea how easily the pairs of modules come apart (it is a two-module can, or just a pair of plates?)

I think it would be worth disassembling one. Looking at the photo I think Nissan are using the same fastening technique they used on the "Gen 2" modules (see here). If I'm correct then you should be able to separate the two module easily and then reassemble them with the terminal polarity aligned to simplify the bus bars

 

[Kevin Sharpe]

I am inclined to do the Wolf pack as it means every two cells have a BMS connection versa a BMS for 4 calls. But I don't know all the ins and outs of this.

I like Wolf's approach and one of my friends intends to use his modified Leaf BMS when it becomes available.

I did build a 48kWh Leaf battery by paralleling modules (see here) and all the Leaf systems including the BMS worked fine

In this photo you can see the Leaf GOM indicating 81 miles range at 50% SOC