gms1991 - the experience of Jet2 to date tells us that
a) their schedules will not look like those of EZY, RYR etc in terms of utilisation. Don't expect tight schedules and aircraft being flogged between 6am and the early hours. Do expect lot's of gaps, lot's of long turnarounds and aircraft sitting around on off peak days doing nothing.
b) when they apply for overseas slots for new routes, the UK airport they register at the time generally has litte bearing on what they are actually planning to do with the slot. The one thing that listing 'BLK' as the UK end of a slot pair in DUS can pretty much guarantee is that there is no intention to fly a BLK-DUS route. There are a bucket load of slots for Spain and Portugal that were listed as originating from BLK, BOH and, to prove the point, SZD!
I'm no closer to their plans than you, so it's all speculation at the end of the day, but personally I would be suprised to see much more flying from the 3 a/c operation listed above nor would I expect DUS to be anything to do with BLK.
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