Why do we need to fill it most weeks though? We have a complete obsession in England about having empty seats.
Given how much money we're making and the ambition of the owners to turn us into a 'big club', I'd say a larger stadium is a necessity, it certainly would influence future (and current) players.
There's demand for 40,000 for the bigger games, but there's also fans who can't get tickets for the less glamourous ties, this will allow them to see Leicester and helps build the support base for the future.
And importantly it also allows more corporate facilities which are essential for generating matchday income and paying for the expansion.