If executed well, this project could turn out very well. It seems complicated but if you have the funds and find the means to make it happen that would be awesome. I would be especially stoked about the slide part (the big slide out on the deep playa at bman '09 was sweet and seemed to be a huge success). And it's always nice to have several viewing points on the playa - I love having a good place to gaze out onto our beautiful city (especially at night!)
What kinds of ideas did you have for the inside/tent? Would it just be a hangout place with couches or something? Would it have a bar or anything like that? I'll try and think of some themed-related things that could go inside, but interaction is always the best part about cool playa installments like this!
Best of luck to you with this project. I hope the idea can reach fruition!