EK77WNCL, surely you're joking about Jet2 operating widebodies to MLE etc? In the least offensive way possible, you really must know nothing if you're suggesting LS could even operate to MLE etc.
In regards to it on other short haul routes, it could perhaps work on small occasions from the bigger bases on high load routes but not to the degree that they would make much from it. I've also travelled regularly to TFS (I love the place) from NCL, especially with LS, and the loads are good most of the time but sometimes can be quite a few empty seats. There was one at the beginning of June with over 30 empty seats.
Again, I just don't think it would work and some of the routes suggested are laughable. You could understand a market in NYC but no chance of places like Kenya, MLE etc.