Try that trick at most busy overseas airports, especially Europe, and ATC will give you a right bollocking (and rightly so). The comments will be along the lines of 'you accepted intersection X, if you require backtrack you must advise so adequate spacing can be provided. This has been heard many times even for the slightest of backtracks.
Fair enough BalusKaptan, although most modern European airports ie FRA, CDG, MAD, BCN, FCO, LGW, LHR, are designed with specific lead in guidance for when you enter the runway environment ala cat 2 or 3 complience..so in essence its not an issue.
Dublin RWY 28 has a similar setup to what Keg describes..but ATC are aware of it, and thus compensate. I wonder if ATC at MEL have observed the lineup technique first-hand? and if so..are they shouting down the mic at the DJ crews?