how will this export work? if you use more than 4 MB of textures, will it give you errors, warnings? how can you develop on e.g. a dual core pc for a 729MHz CPU without getting bad surprises? how does playtesting work - burn on cd every time you make a slight change? gnah...
Unity automatically compresses your level and assets to a high degree if you tell it to build a web player version of your game, it appears to scale stuff as needed to fit. Your textures and sound files, design with them as bmp and wav, and it will automatically turn them into compressed formats on the export! So, I imagine it would compress everything to fit onto a wii and alert you if it weren't possible-- and if you have a proper dev kit, you are connected directly to the console and don't have to burn discs back and forth.
I really like the design of Mac OSX Leopard. Instead of spending a lot on Apple hardware, you can just install it on a couple of different PC setups which are guaranteed to work with it, like these guys:
Open Mac
