stew, check your sitemail I sent you a link for the videos.
As for projections...you'll pick it up quickly, but in general you can look at the initial difference between a player's actual and projected and then with a slight factor for their makeup category pretty much figure on increases coming over roughly 5 seasons. It's more complex than I'm making it, but let's say a player's actual against RHP is 50 and his projected is 70 when drafted You might expect to see increases of 8 4 2 1 1. This will vary by a number of factors including coaching, advancement through the minors, makeup and some luck. Also, some categories are more likely to increase while the physical categories like speed don't by very much if at all.
As I said that's really simplistic but should give you a rough idea of what happens.
Injuries, demotions and other factors can retard growth.
Oh, and before I forget the OVR rating is almost always useless. Learn the important categories for each position and focus on these. In some cases a 65 rated pitcher can be much better and more valuable than one with an 82 rating. SS/3B types almost always tend to have high OVR ratings, but that wouldn't make them more valuable than a catcher who could be 20 overall points lower.
As for your suggestions...if you think something would add to the game...post it. We can only hope that WIS takes a look at the suggestions and implements some of the better ones.