I say Corey hart makes the hall and spends his entire career with the brewers.  Though he's 6'6", he seems to be in the shadow of Weeks, Braun, and Prince, but I think being in that shadow enables him to coast under the radar and produce better.

As for braun and Prince, I wish attanasio would open his wallet now for them.  I realize they both are years from being arbitration eligible, but lets sign them both for like 10 years 100 million each, to reward them now.  The indians have done this with grady sizemore.  They both are making like 500,000 for the year, so raise that to 10 mil and maybe we can lock these guys up for awhile.  Its never going to happen but it would be nice to keep those cornerstones.

A Hall of Fame career is brough around consistant excellence.  We can not say for sure who is going to be around and consistent long enough to say who is going to be a HOF-er.  There are certainly guys I can eliminate, but few I can say definately have a shot.  Here is a run-down of our stars, and who has a shot, and who definately does not:

Sheets- Very little chance.  He needs to produce consistant 17-20 win/200+ K years (despite how silly wins and losses are) this year and through his 30s to even have a shot.  He's 71-73, with no post season experience.  You could make a better case for Livan Hernandez than you can for Sheets.  Them voters love that post season heroics, especially at a young age, which sheets does not have.

Fielder-  If he gets 500 homers with the way he produces he could be considered a contender.  The issue is that he may (read: Probably will) eat himself out of the league.  Now, he could go on to have a 2nd career as a DH and make big numbers that way, but that will not be with the Crew.  As BP contends year after year, young guys with old guy skills (power, little speed) don't go on to HOF careers.

Weeks- Bad start, but if he reaches (big if) and maintains (even bigger if) his potential (30/30 for 6-8 years) he also has a shot.  

Hardy- Again, needs to maintain this current level.  But if he reaches 2500-3000 hits, he's got a shot.  The problem is that the Shortstops preceding him are some of the best in baseball history.  He won't have the average of Jeter, the Power of A-Rod, the RBI potential of Tejada, or to his contemporaries, the power/speed combo of Reyes and Hanley.  With those two in his league, he's unlikely to make a lot of All-Star games from here on out.  However, if there is any candidate to be a Brewer for his entire career, it's JJ.  I'm afraid that he'll have to reach 3000 hits to get in, and thus have a long, biggio-type career into his 40s.

Braun- Great start.  Now can you keep it up for 8 more years.  Then you'll be Pujols.  And yes, you will be in.  Especially since your biggest competition at 3rd is Zimmerman (on a terrible team), Alex Gordon (not a good start), and Garret Atkins (probably not going to maintain levels established last year).  This is of course after A-rod and Cabrera move over to 1st due to deteriorating skills.  Braun is the one I'd lock up 2nd, behind JJ.

Hart- Man, if Ned only got him in last year... well, lets see, how many non-pitcher HOFers really start their careers at 25?  He's gotta maintain this level of play for another 8 years too.  Not likely, but a very good player.