Lot's of good memories when reading this
Surprised that nobody said "BRD/UBRS/MC and while running from the GY to the mountain, you would fall down in to the Dark Iron Dwarf cave." Now you are stuck as a ghost, in a shitty maze-like hole, while the grp/raid is waiting for YOU...
Or maybe AQ before they put in the portals - Wipe on twins, and you had to run all the way there. Especially bad if you didn't have a mount (not a big problem for my guild, since we farmed the first trash-pack until everybody got a mount - kill all-1, run out and reset.).
The run to Major Domo was also quite long. If talking about world-deaths, I'd say back in Vanilla while trying to cross an "opposite faction"-controlled zone. Running from Arathi to Badlands or STV to Burning Steppes wasn't all that fun. Not something you did often, but it was required at least once to get the flightpoints.
Anyway... the original EU-post should probably be split into two. One is the ghostform and running to where you died(or into the instance) - most of us will agree that isn't really a big issue.
Then there is the Res Sickness. Normally this doesn't bother me - it's the price of failure. However when they pull forth a rare-mob like Major Nanners(the MoP-rare with the best loot - aka the Whistle!), give him a fairly random 1-shot ability (jump up jump up and get down!), and THEN put him in a place where you need to spirit-res if you die... That annoys me a bit. If I avoid the jumps I barely get under 90% hp as a furywarrior - if I get an unlucky jump.. boom, 1-shot. Spirit-res inc. Give me a 5-10 minutes walk up there, fine. But don't put a rare-mob with a 1-shot ability, that forces you to spirit-res if you get hit by it.