I think (I'm hoping), that the battery market will split into two groups of "easy" and "You need to be a craftsman"..I hope the lower battery prices turn out to be true but...
I get a nagging feeling that we may be approaching a low in the battery prices right now. Even if the Governments across the Globe are 50% as committed to lowering carbon emissions as they claim to be, it's still going to cause a mass rush on PV panels and Batteries for the next 20 years. I see prices dropping a bit more in the next few years but then as demand goes past supply it's going to start to reverse. Also once Governments see the fuel tax revenues start decreasing they are going to find ways to bridge the loss by extracting money from the green energy sector.
This is why Nissan Leaf cells are so damn popular.. they are the "easy" group because any idiot can screw a nut onto a threaded stud..
But most large format EV cells have welded tabs.. and one needs to have some basic skills, and be willing to put the effort in, to use them.