I want better turning circles. Something i've noticed with the gameplay that i thought PES4 improved on PES3 with, was the manueverability of the player dribbling, but runs still seem to only occur on a 8 point axis, and running a straight line should not be as straight. Seems very video-game as it is now. The constant back turning to position is tiresome. Players should be able to turn on their run, but not by showing their backs to the play. More mo-cap is needed.
Better presentation. Personally i thought PES4 took a step back from PES3. There should be more cutscenes that focus in on player reactions, so we can have a nice look at the kits or their faces. Also - for the love of god, please change the height to display in FEET, NOT cm! And improve the camera angles. Again, they were better positioned in PES3.
The animations when the whistle is blown are seriously jarred. Sometimes your player should know to stop running, instead of carrying on, or a few second before whistle they should start to cellebrate, or the crowd should be whistling for the end of the game. But animations need some work when the game ends - they seem disjointed.
Edit:
oh yeah - forgot to mention:
AUTOMATIC SUB options. Eg, i personally cant be arsed in pausing the game and subbing. We all know that in real football, subs mostly occur at 80mins. It'l usually be 2 players. I reckon PEs5 should allow player teams to autosub. So when you're playing, you'll get to a point at the 75/80 min mark when you have two players subbed into your team. Ofcourse, you should be able to tweak this in formation settings. Eg, if one of your strikers is doing well, the computer would sort down the list of perferred sub positions to find the next best option - or use the rating system and try to sub the player who it thinks is performing the least best. add in an option to accept or decline proposed subbings and you're rocking.
PS, i REALLY HATE how when there's a computer subbing in PES4, you can't take a free kick quickly until the subbing box is off your screen. It's so annoying. You should be able to play past this and "over" it.
*I will remember to use the EDIT button in future*