Some fantastic replies to this! Thanks a lot for that.
I think there was some activism around the boardroom battle and the 'Gang of 4' just prior to the stadium relocation but I haven't found much evidence of opposition to the move itself. The proposed name of the stadium cause some consternation and fan activism successfully challenged this, thankfully!
I think the new ground being located so close to the old one, and within the city centre was important - especially (as others pointed out above) when you look at those out-of-town stadium builds.