#1 - The draft classes are dynamic again.
What does this mean? The prospects who are in the draft class pool change every time you advance to draft day. I wrote down the "blue chip" prospects and took note of which prospects were in the draft class pool. I had 25 blue chips and I went through the draft FIVE times and here's the # of blue chips I had in each: 7-8-6-10-9
I'm pretty disappointed about this. I really wanted a static draft class that changed every year. I think we'll now have players carry over season to season. I will look at this later.
Please give us STATIC draft classes moving forward!!!!!!!!
#2 - The potentials look better at first glance
I think it was pretty common for guys to manually take off some POT for each player drafted in MLB '15. In '16 the potentials are much more balanced IMO. I saw only one 99 POT guy after reviewing all 30 teams. There were probably 8-10 A POT guys. That's way lower than years past.
To go a bit deeper here's one MLB Draft POT breakdown:
90+ (13) 93, 92, 93, 94, 95, 97, 90, 91, 91, 95, 91, 92, 94
80+ (44)
#3 - The ratings glitch/cheat from '15 is no more
In '15 there was a glitch/cheat where you could not scout a soul, not discover a soul, and there ratings would be exact. So basically there was no guessing. Every prospect you had in your draft pool had their exact ratings. This year that doesn't seem to be the case as none of the players in the draft class are completely "grayed out".
#4 - There is a no potential glitch/cheat...not as bad though
Put in spoilers in case people don't want to read it...
That's my first take. Some of the info could not be fully correct, so please correct me if you noticed anything different.
Hopefully more people can contribute what they find as well.
*Random Rant*
The player appearances are a little better and names are okay...but there's still room for improvement!

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