Maxalt,
I would have thought that your OEI points were based on an area say 30nm either side of track and safety alt/stab.alt perf which should allow some flex on routing.If the direct routing is always from about the same point/approx., then speak to your ops people to give an alternative OEI point,or you just have to get into the books and work out your own pre-planned safety altitude/ stab.alt using company criteria.Its not that difficult-I just used to wake-up the nav. -- "just to confirm my figures for 1,2,or 3 engines out". Easy...