Would be nice to see the airport getting another operator. Would Wizz consider splitting its London operations between Luton and Southend?
Can't see it. They tried Stansted but that didn't last long.
A quick check on the Citalia website shows that using LGW as the baseline, SEN departures are about 5% more expensive and LCY about 20% more expensive. I would think that those figures make SEN quite an attractive proposition taking everything else into account.
It will be the Thomson one that will be interesting. Their pricing policy means that most London passengers looking for the lowest price will always pick Gatwick even when another airport is easier to get to.