CB i just read a massively tatic guide on FM britain and they seem to agree with u...
they say that the player positoin is now altered/tweaked by the attack/defense mentality and the close down as well....
i was having the same problem as u and what i did to fix it was pushing my defense up and telling them to play offside line and also closing down almost all the picth..i know its a risk strategy but it works wonderfully against smaller teams than your own. also, i found out that if u do this pressure style of marking plus set short passes and low tempo ull absolutly kill the opositon stamina... which will lead into victories for your team...
i aways had a hard time beating smaller teams, specially at home cause they would usually play very defensive and on counter attacks, but with this new strategy i made, im beating them easily, now this shouldnt be used agaisnt top flight teams like arsenal or utd, since they have enough quality to pass around your pressing marking , which will result in your team colapsing on stamina and leaving a lot of gaps on your defesne, also by trying to play short and slow tempo, u wont be able to pass around them cause of their great marking power...
so my solution for this is simply do it like in real life, stay back, try to prevent the runs(deep defense) tackle hard and set someone to mark tight if the oposition has a world class long shooter like deco for instance(he will kill u if u leave him space to shoot from outside), and play a direct, fast pace, counter attack style...hope for the better lol
just like mid table teams(everton, aston villa, west ham, newcastle, etc) do in real life, u just cant expect your team to dominate and beat the top 4, best thing to do is stay back, and try to hit killer counter attacks, if they cant pressure (could be for several causes like they having a bad day on passing or something like that) ull be able to win and still get a lot more goal chances than them, evan using counter attack...i remeber beating liverpool 3x0 at home doing exactly this tatic, i had like 11 shots against 3 or 4 from them.
now, if they are having a good day, with key players inspired, i guess like in real life, theres nothing a manager can do to change this cenario, if there were, the top 4 wouldnt be the top 4.