We did try to import from Israel only for Uncle Sam to veto it heralding a new era of our own BMD development.
It was a strategic system in 2002, not anymore. Unless you mean something like GBI
Yes, tech evolves with time but Uncle Sam will ensure that we'll never ever acquire their top of the line tech. That's why indigenous solution is the best way forward.
I think the news only meant to say some missile was fired again today, doesn't not necessarily mean it was BMD phase-2 test (though I'm hoping it were)