Well considering all they've showed so far, I thought March was optimistic. I hope this delay gives them time to ...
-make the cockpit a bit more dynamic and alive (like SHIFT's - when i bump a wall at high speed.... it should be scary, it shouldn't just turn the "camera" back towards the road, there should be some shake & loud noise, at the moment it just seems too placid and forgiving. Hitting a wall in gran turismo feels "fine" it really shouldn't feel that way. (yes, i know there is no room for 30fps effects in a 60fps game)
-the chase cam needs to be a bit looser (like PGR3/4 would be a good example). It feels far, far too stiff. I don't know anyone who used chase cam in prologue or the time trial demo because it feels so ridged.
-sound - yup the new videos seem to convey a lot of bass to the car sounds now, i'm worried this is just bad camera microphones which can greatly distort bass sounds (sometimes leading to cool sounding results - think off screen screenshots looking "better" than direct captures.) I'm still worried about the sound.
-the online - MotoGP on the XBOX1 did well online back in 2002 - we've come a long way since then, expectations are high - I don't need to go into this. Forza is probably the leader here.
I think forza is their main competition, but there is little point in Polyphony looking at developers who do nothing but imitate them. SHIFT really is the new "wow factor" racing game benchmark they should be looking at - seeing a few friends reactions to playing it confirmed this in my mind. If they took a few days off GT development to play it and went back to GT fresh, they might realize just how placid GT feels in comparison. You could say this is because it's more of a sim, but I hit a curb on ice at 20mph at xmas, the noise of the bang and shudder of the car being knocked back onto the road was scary even at that speed, at 100mph in GT I would have barely heard a sound, and the car would have simply rotated back into the direction of the road after slowing down a couple of mph for a split second. I'm not looking for realistic damage here, i just want to be punished temporarily (be slowed, be disorientated) for hitting that wall.