It certainly explains her reaction to the ‘regeneration’ in Journey’s End, doesn’t it?

I thought the Keats was particularly appropriate here; it talks of the flower that blooms another year, which could be a metaphor for Rose (who returns to be with Ten for a short time at the end of Season Four) or a literal description of Ten, turned into Eleven.

I need Rose to be there for him when it finally happens, and you've described a beautiful possibility here.

I wouldn’t discount it, and it will fit into canon beautifully if they did it this way.