raptorific:

Work together with RTD, keeping in mind that Doctor Who takes place in the same universe as Torchwood. 

Without even mentioning it on Torchwood, make it so that FutureDoctor’s death took place immediately after the Miracle, meaning that he’s still alive at the bottom of that lake. Using some technobabble (I don’t know, putting the Doctor’s remains in a bathtub full of the Flesh or something) they are able to revive the still-living Doctor at the end of the season.

This will almost certainly not happen, since Torchwood is just starting to make a name for itself as its own legitimate science fiction show, but it would allow for a Captain Jack cameo (which was written out of A Good Man Goes to War because Barrowman was filming Torchwood).