I'll try and address each point i've seen so far:
Alcides Escobar does not qualify, I"ll have to add the graduates to the site.
Desmond and Sizemore have guaranteed starting spots, and will provide at worst average Fantasy League production in their positions, depending on the size of the league. How many othe guys can you name that can say that.
Poreda and Maloney may not be the best pitching prospects in baseball, but both of them should have starting rotation spots come April, and if you haven't read the write-ups on each player, you should. They aren't high-upside guys (at least not anymore), but they also come with less risks than their counterparts.
Aaron Hicks is terrible. Even if he does improve upon his power in the 4 years it'll take him to reach the majors, he's still a 10-15 homer, 10-15 steal guy in the outfield. He batted .250 in A ball. He has a looooong way to go. I'm not saying he can't make the list someday, but he certainly doens't belong their this year.
Starlin Castro- How big are your guys leagues? 20 teams? My main league is a 14-team league with 4 rookies, and even when this guy is ready to play, he'd be a last round rookie pick, or a 20th round draft pick. He's also at least 2 years away. I can find 100 guys better than that.
Todd Frazier- I remember looking at the guy, certainly the best suggestion yet. He needs at least one more year, but so do a lot of prospects. He's a lot more valuable as a SS then he is as an outfielder. And he currently has no where to play. I'd take Chris Heisey over him right now, and he also didn't make the cut. (though i certainly could understand people questioning him not making it).
Freddie Freeman - Let's put this one to rest. Freeman made the tail end of my 2009 list. I know he was injured last year, but he was still pretty bad. As a first basemen, he has to be a monster to have fantasy value. There are always 20+ 1B's with 20+ homer power, etc. Right now, he's not that. And the days of guys roiding to get that way are over. The standards will certainly drop, but he has something to prove this year. He will be on the list with a strong showing next year. I'd rather have the 50 guys i had on the list, and most of the next 7.
Logan Morrison - He was on my list that past two seasons. He's also sucked the past two years. Yeah he's basically guaranteed the spot when he's ready, but his power has been terrible, he has no speed, and he's a first baseman. Where are you going to play him? And when will he be an effective fantasy player, 2013?
Manny Banuelos - Martin Perez is a top 10 prospect in some people's eyes. Certainly he'll have a much easier time making the majors than Banuelos. In every other way, they are essentially proving to be similarly talented pitchers. I am not a Yankees homer. The kid was awesome last year. He could play his way out of the list with a bad showing next year, but i doubt he will.
Grant Green- I'm beginning to notice a trend with your complaints, apparently 5-10 homer middle infielders with marginal speed are awesome fantasy prospects now. I looked at Green.. his bat is solid. He will be a solid major league hitter. But he doesn't even have Dustin Ackley pop, and his speed is marginal as well. He's still 2 years away. I don't want him, not over that top 50, or the next 7. He will probably play his way onto the list when he finally tackles AAA and he's guaranteed a roster spot, but he's not worth it right now.
Jordan Lyles - Let's see him play somewhere before we consider him a top 50 prospect. Apparently 37 guys in his draft class had more talent. I need more to go on besides someone said he's really talented.
Wilkin Ramirez - Go look at his numbers. Go read a scouting report. ANd he's ready now, and he has an open spot in the majors. What don't you like?
The next poster Basically bashes every major league ready player that wasn't a top prospect talent at 18. The list is about Fantasy value. I'll say this once, because it gets old.
Fantasy Baseball Rookies 101: The longer you hold rookies on your roster, the less valuable they are to you. For example, a guy in our league drafted Justin Upton at 16. Two years before he got drafted in the majors. He held him for 5 seasons, and now he's finally promoting him this season. Well Justin Upton is awesome, I'd love to have him on my rookie team, but he also was unable to improve his team with that rookie slot for 5 seasons because of it. That's 4 other players that could have given him value for 4 different fantasy seasons. Certainly, you all would agree that he's more valuable if he was able to somehow draft him as a rookie this year and promote him in one season. That doesn't mean that you shouldn't sometime reach for the star on a Bryce Harper, or a Justin Upton, or Ken Griffey, or A-Rod. But a balanced rookie portolio would also include guys who could help you now, so that you can continue to win every year. Desmond, Sizmore, EY, Poreda, and Maloney could all replace major league draft picks, depending on the size of your league. Drew Storen could be a closer for your team this season. He's definitely not the most talented pitcher out there, but he has a ton of value, that you're missing out on if you're always taking guys 3 years away. The other thing about major league ready talent is just that, it's major league ready talent. They are typically at the point where they've figured out their problems, they are much less of an injury risk, and you have enough data on the player to defintively know what you're going to get. Obviously, you can't always draft major league ready talent either, or you'll have no major league keeper-worthy players in 5 years, unless you are a cunning trader. But it is that happy medium between current value and future projection/risk that is supposed to be shown by this list. It is supposed to answer the question, assuming you have nothing to start with, and everyone ahead of you on the rankings is gone, who should you draft next. I think we've done a fairly good job of showing that.