Good idea, stick to the "less buoyant", "less demanding" market, no competition there either.
So where's the buoyant market with no competition on it?
Don't you think they'd find a market to tap into before they got aircraft to serve that market?
Reading the thread, the topic has been long-haul and wide bodies and whether this would be a good business move. I'm quite sure nobody doubts they'd do their homework - that's not the question here. We're actually having the homework discussion on this public forum, and everyone has their views.
To summarise... is there a long-haul, widebody market that would be worth Jet2 while having a go at? My opintion is no.
Why don't you try thinking about some routes with less, or even no, competition.
I have my suspicions about routes that have less or no competition on them, and the reasons why. The wide, bucket and spade Mediterranean routes can handle it. Others I'm not so sure, did you have any in mind?