Some interesting points. The toss abolishment is something that I wouldn't be completely against, I think it has merits in theory.
DL use in a test match is not something I agree with, on the face of it. What's your basis behind the DL use? It would destroy something like 10 overs left in a match with only 2-3 wickets in hand. That's a good test match that a team effectively loses in essence. Or am I as usual missing the point?