Critics of replay have often used the length of games as a rebuttal to those in favor, but with officials making rulings off-site, such a problem would theoretically be avoided.
"If there's someone there watching it, you would think that potentially that could speed it up," Melvin said. "Now where the flags or whatever come into play, I'm not really sure.
"Not only do you want to get it right, you also want to get it right quickly. So if someone's watching it and is on top of it and has the use of replay very quickly, then that certainly doesn't sound like a bad thing to me."
The proposal that will be voted on by owners in November would allow managers to challenge three calls per game, which would be reviewed by officials at league offices in New York and not umpires at the games. Of the three challenges, one would be allowed during the first six innings, with two additional provided in the final three innings.
The use of expanded replay might have prevented Melvin from getting ejected in Wednesday night's 2-1 loss to the Astros after arguing a call with second-base umpire Doug Eddings after the third out of the eighth inning.
Melvin approached Eddings after Eric Sogard was called out at third on an attempt to tag from second base on a fly ball to center field. Brandon Barnes' throw was ruled to have beaten Sogard, prompting a protest by Sogard and Melvin's emergence from the dugout.
"I didn't have intent to get thrown out of that game," Melvin said. "But I can't get thrown out of that game. In a close game like that, you have to go out there and give your two cents and address what you think is either right or wrong. But I can't get thrown out of that game."
Jeff Kirshman is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.