"The cockpit and the tail section ended quite far apart, in clean condition. If the missile exploded low enough, some shrapnel could have hit the fuselage where it narrows, helping to detach the rear section. Cockpit and port wing show a lot of missile damage; the tail I can't see yet. "
Not sure there's any indication of the tail coming off until shortly before the end, nor the port outer wing section, and there's certainly nothing that looks like the shrapnel damage found at the cockpit anywhere that far back.
The well-photographed cockpit remains (actually the bottom half of the forward fuselage) and a lot of bits that seem to be universally from the forward part of the fuselage, including windows and a portion of fuselage including an emergency exit and the starboard side Malaysian flag are all clustered towards the western end of the wreckage path, 6km away from the tail, which is only about 700m south of the main wreckage.
The tail, APU, outer port wing, some other bits of what are possibly horizontal stabilizers and interior furnishings are right at the eastern edge, not far south of the main fire from the centre section wreckage with at least one wing and the engines and MLG. The early Akkermans shots are mostly from round here and he's carefully photographed two seat row markers on overhead lockers - 17 and 31, which are from the front over the wing back to nearly the tail, suggesting that some of the rear fuselage ended up here too. The 'ia' of 'Malaysia' on the port side of the fuselage, which is from around the wing root is here, too, along with the tail fuselage piece with the aircraft registration on.
There are quite a few largish bits visible on the satellite photos which no one appears to have photographed, possibly because they're unreachable by foot or far from roads. Something looking like a wing section is within the chicken farm to the west of the tail crash site.
It's notable that the wreckage trail bends round to the left as it goes on, ending up about 30 degrees from the original aircraft direction.