Easier said than done. Remember, the NFL already has the same technology and have you ever, and I mean EVER, seen a replay take up less then three minutes? First, there's the time in between when the coach decides whether to challenge, then the ref conferring with the coach, then announcing the play has been challenged, followed by the ref heading to the review station, reviewing the play (never less than a minute there, often more than the 2 minutes they are officially allowed), ref comes back out and announces decision.
What you see at home in just a few seconds is ONE angle which frequently is contradicted by the shots from other angles.
I do agree completely about batters in between pitches. I absolutely hate guys who have to adjust every piece of clothing and then throw in a few Hail Marys for good measure. Rickey Henderson was the guy who really brought that to baseball along with the practice of constantly referring to yourself in the third person. "Rickey Henderson needs to do his Rickey Henderson thing in between pitches. Rickey needs to step out, check Rickey's gloves, adjust Rickey's sack, check Rickeys gloves again, check Rickeys bat, adjust Rickey's helmet then dig Rickey's shoes in. Then Rickey steps back out of the box and checks all of Rickey's things again."
P.S. The whole Rickey bit is swiped from comedian David Cross. :up: