The positive is exposure. I've got kids in infants and primary schools and the interest in football has bloomed, we have kids wanting to be Gareth Bale, the next generation of children wanting to play football. The expansion of a major tournament has given Wales a chance to produce the next wave of players, and as such improve the quality.
In mind that is more important than the quality of some of the games in the short term, i tend to find that most major tournament have poor games in them, it is just that over time the mind remembers the better games.