Let's take a look at my minor league system. Fictional world, I simmed something like 6-7 years, then took over the worst team in the main league (the Toronto Leafs in this case). Just finished the first season and am pretty much done with my second offseason (and it's just November; low financial flexibility right now since the team pretty much sucked for those 6-7 years). So... any near-ready minor leaguers pretty much have been brought up.
A quick perusal through my system, and found Jack Laurent, a 23-year old left fielder on my AAA club in Charleston. He's a solid OBP type of batter, but with slightly "plus" power, enough to make him very interesting. I picked him up from Washington in late September, just after the end of the regular season, trading away a mediocre starting pitcher who was going to get an arbitration-related pay raise.
Laurent's history is pretty plain, except that he was a 19th round pick (451st overall); entirely atypical of the league. Seems to have been one of those "nice finds".
In a quirk of the system (I'm still working on tuning feeder league ages) he spent 5 years at the "high school" level; I'm counting one of those years as American Legion ball.

In 156 High School games (over five seasons), he brought up an Avg/OPS/Slg of .286/.371/.426; with 7 HRs and 19 SBs. Fairly solid numbers at that level, and he continued them in his initial minor league years: posting a cumulative .404 OBP in 2 years of A-ball, and nailing down a .240 (ew) / .375 (nice) / .354 (eh) season in AAA Norfolk last year, while mixing in a few home runs and 19 SBs.
Laurent is looking to develop into a solid lead-off hitter (I wish he had a higher batting average, but that OBP is hard to argue with). He's got decent speed, enough pop to make him threatening, and on top of that is an excellent defender (fielding rating LF: 9, Arm: 9).
I think he's most interesting because he was such a late pick in a draft; one of those guys you just don't see coming. His injury history is a little bit... er.. blurry, but we'll see how it affects him.
TRANSACTION HISTORY:
Player History
04-07-1998 Wins the 1998 CBFHS Glove Wizard Award at LF.
02-11-1999 Injured (fractured eye socket), out for 2 months.
07-01-2001 Drafted in the 2001 first-year player draft (Round 19, Pick 19, 451st overall Pick) by the Washington Senators.
05-28-2002 Injured (blurred vision), day-to-day for 6 days.
07-25-2004 Injured (tender shoulder), out for 1-2 weeks.
09-20-2004 Was traded by the Washington Senators to the Toronto Leafs in exchange for SP R. López.