so you guys want the game to be realistic but at the same time still able to control it ? LOL
so who control the hand-ball fouls in reality ? I just want the game to be as much real as it can, that's all
Well, technically the players making the fouls "control" the hand ball fouls in reality because the rule says it has to be deliberate and/or the hand (arm) in an unnatural position.
The latest example is from yesterdays match between Russia and Croatia where a Croatian player made himself unnaturally wide (arm in an unnatural position) by moving his upper body, including his arm, toward the trajectory of the ball leading to the foul that lead to the 2-2 goal.
An arm being in an unnatural position and wether a hand ball is deliberate is of course also a refs interpretation, and different refs have different interpretations, and sometimes it's also linked to a national FA, with the Spanish for example calling fouls on almost all hand balls.
So in conclusion the "control" of hand ball fouls is a mix of the fouling player and the ref, meaning it's not just some random thing that the user of a football game shouldn't have any controll over. Personally, I only remember hand ball fouls from "This is Football", and while it was a nice gimmick at first, it also got annoying fast because I as a user didn't have any control over it.
If there where to be hand ball fouls in PES I wouldn't want it to be some random occurence but rather tied into some sort of button control. I've thought to myself before that while double tapping

beforms a standing tackle or a shoulder barge in current PES they could introduce that continues tapping of

should be a "stop opponent by all means" action with holding shirts, pushing, dragging arms, tripping opponents and such. They could also have sticking an arm out in there if the ball is played so the foul reflects back on the user's action.
Besides that, it could also be tied to a thing many people here are asking for: different refs with different attitudes/interpretations (ref ID). In that way some hand balls could be called without the user's controll and you might not feel cheated or "scripted against".
So hand ball fouls are not just something they could easily put in the game, it has to come with other sets of mechanics, and as a couple of others have already said, the list of basic footballing stuff they need to work on is long enough as it is!
Edit: just reading
@orangebard's post made me think that a sliding tackle could also lead to a hand ball foul. This is sort of a 50/50 call in real life depending on the ref because it's an interpretation on the arm being in an unnatural position. So if the game called fouls on about half of all hand balls when slide tackling I guess it would be ok because the user would know he took a chance when doing that slide tackle.