Where did PD lose touch for you? I've spend more time on GT5 this gen than on any other GT. There was just so much to do, plus the newness of playing GT online. GT6 now feels small in comparison. I finished career mode, all gold, under 60 hours, together with the seasonal events. The new tracks are great, and day/night/weather on many more tracks is awesome, yet GT5 felt grander. I'm missing Rally and F1 from career mode. Moon buggy is nice but over way too soon. No real endurance races, no custom tracks (yet), no procedurally generated rally tracks. No xp progression and small payouts make the online less atractive as well. A lot of people simply hang out in tune and cruise rooms, not bothering with racing :/
its hard to say really i just dont get the same feeling when i play thier latest installments. I was a GT 3 and 4 nut played them nonstop till my PS2 died. Heck they even got my started in my real car hobby, the new ones seem so rushed which is ironic because 5 took forever to release. Myabe i just over hyped them myself and was let down.
I kinda have the same feeling with GT6 atm. GT5 was the first GT I actually finished and spend more time on than all the previous ones combined. GT6 is not recreating that feverish addiction that GT5 had. Let's hope GT7 brings it back.