LOKE - I don't have a copy of the Jepp plates to hand but from memory the high minima are a because of no ALS and most restricting, obstacles in the missed approach path.
The 26 ILS is nice to fly on a nice day but look at the terrain out the LHS and you'll wonder how it was ever certified in the first place. Bear this in mind during strong northerly winds!
Yes I agree the 3000m seems high - I would have thought 1500m more appropriate. From an operational point of view the only time visibility reaches this level or worse is during heavy precipitation which is typically temporary in nature.
In the past 10 years the two main operators have been GZ and NZ and I doubt either of them have lowered minimums - I'm sure many dark stormy approaches have had crews wishing they were.....
mcdude