There are Blackmore/Dio reunion rumors every year. Dio has said he would love to if the terms were right. I think it would be up to RB to initiate it which I dont see happening.
I dont really rate the JLT era stuff. I have all the albums, but when I think rainbow, I think Dio era. Down to earth is a good album though, and so is Stranger In Us All. I erally like that album alot. Sounds more like the DIo era and is a bit heavier than the JLT shit.
Wolf to the Moon, Ariel, Black Masquerade, Hall of the Mountain King, Hunting Humans are all great tracks