They'll do Canada one year surely? I agree we'll never get a 'Mania in the UK though, hell I think we'd be lucky to get another PPV at all.
As a Brit I don't care where Wrestlemania is held so I'll throw out Bridgeport, Connecticut and Deadwood, South Dakota for 31 and 32 respectively!
Toronto has held WM IV and X8.
We should at least get something - I think a Royal Rumble would be amazing with a UK audience.