Queen planed The Miracle tour in 1989. In that time they could not do it. What a pity! I think it would be best tour in their history! But I know Freddie´s health was more important.
I don't think they planned the tour as freddie's illness was declining slowly but the rest wanted to go back out on the road but freddie was aganist it citing he wanted to break the cycle of "album,world tour back in the studio etc" when he was slowly fading away and didn't have the strenghth to strut about on stage.
There was a n interview with mike read on radio 1 in 1989 to concide with the release of the miracle with the four members interviewed for the first time in years and they talk about the album and other things as well.