Interesting!
The problem with Gatwick as a base for any airline is that there are already a huge number of aircraft based there with other operators. Makes for a very busy first wave outbound and not much room for anybody else. If Jet2 continued to have bases in the med they could fly into Gatwick from there I suppose? There is also the possibility to do W patterns from other UK bases.
With regards to longer flights, the A321neo already has an extra 1-2 hours on the 737 for range at high payload. I'm sure they are eyeing up destinations around 6-7hrs flying time.
Regarding applications, anyone heard anything yet?!