going to management and making a formal proposal that centers around their need for a better developed terrain park to increase revenue and repeat visits from customers is the way to do it. don't go to them asking for a job outright, pitch it as a good business move for the mountain and sneak in the backdoor with your employment desires once you have convinced them of the need for a better park.
if you could somehow show an increase in revenue at other regional resorts around the time they began to develop a more sophisticated terrain park that would carry a lot of weight with management. perhaps you could talk to resorts under the guise of a school project or something to get basic data like the year they developed the park as a priority, and the increase in profit margins from the year before, things like that.
also, don't discount the family atmosphere of skiing. if mom and dad want to carve blues with lil sis while big brother hits the park, a smaller more family centered resort can only benifit from a well developed park.
points like that backed up with data showing why it makes sense financially for the park to be developed further will be key. follow those up with solid arguments why you should be the one to head that development without disparaging or cutting down the current crew will go a long way to helping you get that position.