Well, good to hear m8!, here's my opinion so far. Had Madden since xmas and PS4...
1. So far, I haven't witnessed any major 'bugs', other than the odd graphical imperfections.
2. You do not need a PSN Plus account for the roster updates, just go to the manage rosters and download the new rosters.
The one thing I have noticed though is the gameplay, and In my opinion(although some would disagree), the gameplay on All-Madden is quite improved.
However, what I have noticed that really needs attention, is the interception rate, regardless of what difficulty you're on. The defense seems to be on the receivers in a shot and you have to be vigilant as to what pass you play.
I think they must have focused more on the running plays this year, although to be fair, I have noticed there had been more teams (in real life)using this method through 2014.
I have used various slider sets from users, and managed to find a good one, with a little tweaking, and I now have somewhat realistic results when playing 15min quarters on All-Madden.
At the end of the day, it's all down to user preference and you have to find the right balance for yourself, but you already know that!.
I will say this though, Madden 15 is leaps & bounds better than its predecessors, both gameplay and graphically, you won't be disappointed!