You would think so Sharklet but unfortunately a LCC operation cannot even be considered at SOU in it's current form. They foolishly sold of part of their prime apron space to Royal Mail who built a depot (yes this really happened) on it. This depot could have been built on any number of the surrounding industrial estates but welcome to SOU airport. The airport of low aspirations. Investment involves setting aside a few thousand pounds for a lounge/toilet refresh every 3 years and that's it. Despite now having new owners it looks like they are going to be no better than BAA treating SOU as a pot to hold some money in. They could quite easily build some new stands in the north east of the airport (part of their master plan) but still noting 10 years down the line.
BOH on the other hand had a new terminal/instrument landing system off the back of a couple of flights a day. You have to speculate to accumulate as they say and unfortunately I do not see that happening at SOU. They have always been in the hands of investment portfolios rather than someone like the Manchester airport group who want to run successful airports.