Ho, something simple. It's a big big restoration in fact, more database focused.
Just that there's zero real summer database edition not even in Option file, and also stats are all outdated. I use WE10 and/or PES 6 (when not available) or WE10 Europa 06/07 for transfers.
No more Aaron Lennon with 70/75 in speed/acceleration etc. (rectified on WE10/PES6)
Also, i check all new players : as they're young, sometimes they appears once in a position which aren't their real position. So what i do, is to keep the value +- (for 1 or 10 points difference doesn't matters) and i rebuild the player stats with his strong and weaker points.
Like Dimitri Payet as a CF remade to fit with his real position (LMF opposite side/AMF/SS occasionnally). It's rare but i try to do it. We're in the future in comparison to PES 5 so for some players especially youth we knows better if there's an error, or if they given random value etc.
Or Eljero Elia young : less complete but more speed and dribble oriented. But very less : up to the game or you to make some players like they really are : i just change the one which are IMPOSSIBLE to evolve like in reality with the value they got in WE10. I don't increase them : i change their basis
There's not a lot to do... But i want at least an evolution which fits to their future counterpart. Another example : Chiellini. He was a long time SB. But as a Juve fan : i know he wasn't an offensive SB : so i've made some balance (+ in Defence than in all Attack related. I do the math with a system, not at the eye so don't worry
)
Aslo VERY weirdly : it's by far easier to do transfers from Winter than from Summer. I checked, more IG player remaining etc.
There's tons of players back to loan but also a lot of players out in January.
Just O.T. but from what i noticed : many teams shouldn't have done transfers and keep their players when i saw the season lol, like one of the 3 England who were retrograded 😅 It was worst on the first part than after (perhaps some players just left for X reasons too... Or bad managerial change etc.) and they got a good Octagon with the summer + WE10 stats (converted for every players : Balance was different)
In brief > there's more players to create not in game (but on others version)... With the summer rosters, and a lot of IG editor faces + extras.
Or completely redone or slightly retouched (hair color/style, eyes colors, beard is sometimes enough). I can't afford to redo every single face.
First, and most important : players info : checking errors in Height/weight/preferred foot. Sometimes by comparing on pic.
I just didn't know how random some faces were + i hate the same Preset for 2 players. Those one will be rectified as a priority.
Maybe you've mentioned it before but I've missed your post. 
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