The Vasa in 1/96th scale. That would be nice......And so colourful!
Revell could make a great job of it in this scale, particularly with all the carved work.
Justifying the cost of tooling up a highly detailed kit in this scale is another matter, because it would only appeal to a limited market, the same as many of the suggested subjects in earlier posts on this thread.
Their recenly released Vasa in 1/150th scale is a very nice kit but has suffered from a number of compromises, both because of the scale and many simplifications to allow for the market being aimed at. It is still good fodder for the more serious ship modeller though.