umm I'm actually not 100% sure of the layout of the whole new terminal...but I usually walk a bit towards the left after check-in, go through immigration and security, and the lounge is almost right there already (a bit more to the left) - it's definitely not to the "far left end" (at least compared to the old terminal). the lounge is around gate 68 if I remember right and the furthest left gate is ~58, and I was quite lucky in having my flights the past few weeks all around 63-68 or so...so it wasn't too long a walk.
I think this is already much better than the old one where the lounge is very very far left...and often your gate was just right after you passed through immigration/security and you don't want to walk all the way to the left and then back to the right again. at least now the lounge is right there (with a bit of walking) once you get out of immigration/security (although yes, the flight can still be very far away - but I guess this could happen in HKIA or many other airports too).
unless...the new PVG terminal is like the HKIA, where there's immigration/security in both the left and right ends (south and north in HKIA), and you usually use the right one while I use the left one ?