Many say it is the wrong time, and it is if a player is not ready for it. For many it is the worst possible time.
However, there are many that have truly benefitted from the World Showcase. It's far from one of our biggest events, but for Carl Crawford it was critical for. Carlos Correa became the first pick of the draft largely due to his performance at that event. (He went two straight years). There have been many pitchers raise their draft value, some became first round picks. There have been over 750 that attended this event that were drafted some 5 months later. There have been over 100 from this event that have now played in the Major Leagues. Not saying it was all because of this event, just saying they attended.
These things happen when over 100 of the very highest level scouts are in attendance. The underclass that happens the week earlier has turned into a very important event for us. It has helped us see thousands of talented underclassmen, many that go on and play in our National and All American Game later. We don't get kids ready to perform at their highest level, but the talent we see is amazing. If not ready, they should not be there.
Once again, these events are not for everyone. Players that lack skills or aren't in shape should avoid these events. There is always a lot of "heat" (scouting directors) even been some GMs that are there every year. We tell all the top players they need to be ready or they should stay home. Many times they decide to stay home. Others sure look ready based on what we have seen.