Just has an idea...

Would it be possible to texture the cell wall with a flag (union jack, stars 'n' stripes, etc.)???

Would look kewl on an XBOX I have planned...

it sure is - all you gotta do is remap the cellwall mesh in 3d prog (or make a new one). ive got one laying round here somewhere... but if youve got a copy of bsx handy you could prolly use the planet mesh id reckon

It's all a matter of taste, really..

I can see it.. really, really ugly

jocke is right... but it can look a whole lot better if cellwall's tranform is changed from waver to spinner and you use an image thats tilable (like the union jack)

I've made a cellwall practically perfect for what you're looking for.
It's in my JamiePresley skin test it out and see if it works for ya. I think my shell.xbx might be 2048x1024 instead of 1024x512.
So if the test looks like ass up your pic size and see if it helps.