I completely agree with you, long time Zune user with both the original, Zune HD and now on WP7, the product is far superior (well except lyrics on the Zune) to the Apple counter parts, Microsoft just didn't push enough, you couldn't walk down a street or turn on a TV channel without seeing an advert for an iProduct or watch a Hollywood movie without dozens of iProductPlacement and it works, people are very much influenced with this and the "cool" factor.
Microsoft and other companies are now starting to realise this with the Lumia adverts from Nokia advertising Windows Phone 7 and the Samsung Galaxy S II adverts for Android, they are everywhere!
On topic though, I would love a new sponsor at Imagination to bring new life to it, Figment is my favourite character and the original attraction was and still is my favourite ride experience ever.
I would love to see a company such as IBM take over or even Microsoft that have such diverse portfolios take over, looking at some of the products from their research labs could work so well in this pavilion.