Well I don't conciser that to be good news. You can have too much of a good thing and next year is not a good year for more passengers to be passing through Luton if this year is anything to go by unless all the extra traffic avoids the busy periods.
The problems next year will centre around the short term car park. It will be soon reduced in size and the multistory car park won't have been finished.
Got to say though that the new security area is performing really well. Makes me wonder if they will delay expanding it until the terminal extension is built. If they do then the food outlets in the check-in area can remain open until they move into the new building.